recursal/Fanatic-Fandom huggingface dataset:
The Host

**The Host** is Challenge #18, starting with the items , , and the . The goal is to defeat Mom. This Challenge is unlocked by default.

## Difficulty

* Isaac starts with the Tick, meaning picking up other trinkets is impossible without  or .
	+ It is also removable using the .
	+ ,  and Gulp! can be used to absorb the Tick.

* The lack of Item room isn't as well compensated by the starting items when compared to the other challenges. Isaac also doesn't start with an active item.

## Strategy

* Shops can sell Mom's Purse, allowing a second trinket or Smelter allowing the tick to be smelted and new trinkets to be picked up.
* Shops can also sell , which will make blue flies and blue spiders bigger and stronger.
* Isaac starts with one item each for the   transformation and the  transformation, meaning only two more items from each set will grant Isaac special abilities. While the lack of treasure rooms somewhat limits the possibility of completing either transformation, it is still possible:
	+ counts for  both transformations ( just the Beelzebub transformation), and is in the Shop pool.
	+ The only other shop item that's in the Spider Baby set is .
	+ from  Bomb Bum is the only other possible item for the set that appears outside the Treasure Room pool.
	+ For the Beelzebub set, the only other item in the Shop pool is , which synergizes well with .
	+ , another Beelzebub set item, can be easily acquired by not attacking  Baby Plum for about 30 seconds.
	+ , another Beelzebub set item, can be won from Shell Games, which are likely to spawn in Arcades.
	+ Key Masters have more than a dozen fly items that contribute to the Beelzebub set that they could pay out with.
	+ Isaac still produces flies when firing at lowered Hosts, so it is possible to farm flies off of them

## Reward

* Technology .5 - Complete **The Host (challenge #18)**.

## Trivia

* A host is an organism that is infected by a parasite, which explains why Isaac has items and trinkets relating to parasites.
* This challenge is similar to the 'Lord of the Flies' challenge in the original game.
The Bean

This article is about the activated item. For challenge #13, see Beans!. For the activated item which knocks back enemies, see Butter Bean. For the passive item, see The Black Bean.
**The Bean** is an activated item.

## Effect

* Isaac farts, dealing 5 damage and poisoning any enemies within close range for 6 ticks.
	+ The poison deals  3.5 damage per tick, or  Isaac's tear damage.
	+ The area of effect is 2 tiles in all directions.
	+ The fart also has knockback and deflects enemy projectiles with deflected projectiles dealing 6 damage if they would've hurt Isaac for half a heart, and 7 for a full heart.

## Synergies

* /: Poison farts shoot a fire behind Isaac. Two flames will be shot if Isaac also has .
* : Spawns wisps surrounded by green stink clouds on the outer ring. The wisps deal 5 damage and poison nearby enemies when destroyed.
* : Deals double damage, but the status effect lasts for the same amount of time.
* : The fart deals 10 additional damage.

## Trivia

* This item is used in Beans! (challenge #13).

## Gallery

* 3DS The icon of The Bean as seen on the lower 3DS screen.
Turdlet

**Turdlet** is a boss added in *The Binding of Isaac: Repentance* that can appear in Dross.

## Behavior

### Phase 1

It consists of 5 separate segments that travel together similar to Larry Jr.

* Moves around the room loosely chasing Isaac, making wide turns and bouncing on walls.
* Huddles its body together, then launches tail-first towards Isaac while straightening out. Its head end spins around its tail while bouncing against walls at high speeds before eventually decelerating.
* Turdlet leaves a trail of slippery Brown Creep wherever it moves.

### Phase 2

* After taking enough damage, Turdlet splits into two parts with two segments, each continuing the same behavior.
	+ While both parts are alive they coordinate the launch attack by huddling together.

## Gallery

* Turdlet in-game.
* Turdlet in its second phase.

## Notes

* Using the  on Turdlet instantly skips its first phase.

## Trivia

* Turdlet resembles a grounded Pin, albeit with a happier expression.
* Turdlet uses the same scream that the Gurglings and the Turdlings use.
* In the games files, there are unused enemies with the name of "Floater Turdlet" which resemble Drips with the color scheme of Turdlet. This implies that Turdlet may have had another phase or attack planned, but was ultimately scrapped.
The Mark

This article is about **The Mark**, not to be confused with Marked.
**The Mark** is a passive item.

## Effects

* Grants one Soul Heart.
* Grants one Black Heart.
* +1 damage.
* +0.2 speed.
* This item belongs to the  set. Collecting three items from this set will transform Isaac into Leviathan.

## Trivia

* The Mark refers to the Mark of the Beast in the end of times prophecies (3 6's arranged in a triskelion). Without this mark, one would not be allowed to buy or sell.
* While The Mark's icon shows the 6's facing towards the center, on Isaac's forehead the symbol appears with the 6's facing outwards.
* Loki has the Mark of the Beast on his forehead.
Temporary Tattoo

**Temporary Tattoo** is an unlockable trinket added in *The Binding of Isaac: Repentance*.

## Effects

* Drops a Chest after clearing a Challenge Room, or an extra Boss item after clearing a Boss Challenge Room.

## Interactions

* Golden Trinket / : No effect.
* Tainted Keeper: The bonus item dropped after clearing a Boss Challenge Room is free.
Transcendence

**Transcendence** is an unlockable passive item.

## Interactions

* : When the effect is activated Isaac becomes invisible.

## Trivia

* The pickup quote "We all float down here... " is a reference to the Stephen King book 'IT'.
* According to Edmund McMillen's first post-Repentance Lore Stream, the explanation behind the visuals of Transcendence (namely the lack of a noose and more importantly, a body) is simply that McMillen found the idea of a head flying around amusing.
* If  are used after picking up Transcendence, Isaac will have no visible body from which to shoot tears. Only a shadow and orbitals will remain.
	+ In Repentance, however, blood gurgles will be spewing constantly from the body, making it much easier to keep track of it.
* This item is used in Solar System (challenge #6).
* In the original Binding Of Isaac, Transcendence was unlocked by beating Mom's Heart two times instead of three.
* The item sprite is a reference to a suicide method.
The Bible

**The Bible** is an activated item.

## Effects

* Gives Isaac flight for the current room.
* Instantly kills Mom, Mom's Heart, It Lives, and their Mausoleum / Gehenna variants upon use.
* Using The Bible on Satan has no effect on him but will kill Isaac instantly.
* This item belongs to the  set. Collecting three items from this set will transform Isaac into an angel.
* This item belongs to the  set. Collecting three items from this set will transform Isaac into Bookworm.

## Notes

* Using The Bible on Isaac, ???, The Lamb,  Hush, Mega Satan,  Delirium,  Dogma,  The Beast or  Mother has no special effect and does not kill Isaac.
* Switching active items while The Bible is active does not remove the flight, allowing continued flight until the room is exited.

## Synergies

* : Spawns white wisps in the inner ring. Wisps' tears have 0.75 shot speed and homing, and deal 6 damage +0.1 per floor.

## Unlockable Achievements

* A Halo - Defeat Mom, Mom's Heart, or It Lives! using .

## Trivia

* The Bible is a set of Christian scriptures, consisting of 73 books of the Old and New Testaments (66 in Protestant Bibles).
* The Bible item instantly killing Mom, Mom's Heart, It Lives! is a reference to the epilogue of *The Binding of Isaac* when the Bible hits Mom's head, knocking out or killing her.
* In the original *Binding of Isaac*, using The Bible on Isaac and ??? would kill Isaac.
* This item is one of the only two ( five) in the game that work towards 2 transformations (Bookworm and Seraphim) and is the only activated item that does that. The other ones are , , , and .
* With an ID of 33, The Bible is the very first active item on the ordered ID list, likely due to its plot relevance.

## Gallery

* 3DS The icon of The Bible as seen on the lower 3DS screen.
* The Bible's splash image
The Headless Horseman

Degraded Boss

(Head Only)

(Head And Body)

**The Headless Horseman** is a Harbinger that can appear in all environments of Chapters 1, 2, 3, and 4; replacing any other Horsemen.

The head has 100 HP. The body's HP scales depending on what Chapter it is encountered, ranging from 60-300 HP.

## Behavior

The Headless Horseman consists of two entities: The head and the body. Each performs attacks independently of the other.

The head has the following attacks:

* Shoots 3 projectiles in a spread at Isaac.
* Charges either left or right off-screen and reappears on the opposite end of the screen. He can charge either one, two or three times.
	+ He performs this attack more often if Isaac is to his left or right.
	+ This attack deals a full heart of damage.

The body has the following attack:

* Periodically shoots red -like shots at Isaac, leaving a large puddle of damaging Red Creep on impact.
	+ This behavior is similar to Pestilence's second phase.

Both the head and the body deal a whole heart of contact damage.

## Gallery

* The Headless Horseman in-game.
* The Headless Horseman as one of  Delirium's forms before Repentance.

## Notes

* In several normal rooms, the Headless Horseman's head appears on his own without his body.
	+ Two or three of the Headless Horseman's heads can be found in the same normal rooms.

## Trivia

* The Headless Horseman appeared in the original *The Binding of Isaac.*
* The Headless Horseman has been a common motif in Europe since the middle ages.
* The boss art shows the head with both eyes even though its in-game sprite only has one.
* The boss art shows the horse's head as brown even though its in-game sprite is black.
* The Delirium version of The Headless Horseman's horse resembles Famine's horse rather than The Headless Horseman's.

## Seeds

PC 0KCW ZG2A (first boss room)

XboxOne XEN1 CHXD (first boss room)

Switch 4Z9P HW9X (first boss room)
The Stain

Degraded Boss
Main path

Alternate path

**The Stain** is a boss added in *The Binding of Isaac: Afterbirth* that can appear:

* In all environments of Chapter 2 (Caves, Catacombs, Flooded Caves).
* Only in the Caves and the Flooded Caves.

## Behavior

The Stain burrows underground when Isaac is not within range. While burrowed it becomes invincible and follows Isaac's movements. When close to Isaac, it pops out and performs one of the following attacks:

* Sends out 2 patterns of numerous projectiles in all directions. The first barrage consists of fast-moving bullets that slow down. The second barrage consists of slow-moving bullets that speed up.
* Sends out tendrils to its left and right leaving small puddles of damaging Red Creep directly around The Stain and to its either side.
* Spawns 2 Chargers and can have a maximum of 3.

It will stay vulnerable for a brief moment after performing an attack before quickly burrowing underground again.

## Champion Versions

 **Grey**: Continuously spawns 2 Round Worms instead of Chargers, with a maximum of 3 at any time. Never fires barrages of bullets.
## Gallery

* The Stain in-game.
* The Stain performing its barrage attack.
* The Grey Champion Stain.
* The Stain as one of  Delirium's forms.

## Arena

When fighting The Stain following obstacles can sometimes spawn:

* 2 red poops (near upper-right and bottom-left corners)
* 2 red poops (near the center)
* 4 red poops (in all corners)
* 2x2 Pits in upper-right and bottom-left corners

## Trivia

* It is the posthumous version of Polycephalus. It appears that the top heads have been stripped of their skin, while the bottom head only lacks its first skin layer.
	+ Unlike its alive counterpart, the lower head has closed eyes and eyelids.
* The Stain has an alternative more degraded variation known as  The Pile.
* 2 Stains can spawn for the nightmare wave for the 6th floor of Greed Mode.
* A third head can be seen in the background in The Stain's boss art.
* During the versus screen, The Stain's popping out sound can be heard. The Stain is one of seven/ five bosses that can be heard in the versus screen; the other six are The Forsaken,  Big Horn, Mom,  Mom's Heart,  It Lives, and  Mother.
* Prior to Booster Pack #5, The Stain could spawn Drowned Chargers if it was fought in the Flooded Caves. This also applied to Chub.
Trite

The **Trite** is a spider variant of the Hoppers. Leaps with less frequency, but at greater distances. This can make them extremely dangerous, as they could potentially leap from one side of the room to the other, catching the player off guard.

## Variants

### Stage HP

 13
 0

### Found In

The **Ragling** is a variant to the normal Trite. They do not leap as often as the Trite and rarely move directly towards Isaac but gains the ability to occasionally shoot 2 magenta-colored orbiting shots.

### Stage HP

 30
 0

### Found In

**Rag Man's Ragling** is an alternate version of the Ragling that behave like normal Raglings but have more health. They can be spawned by Rag Man and  Rag Mega and used as apart of their attacks. If they were spawned by Rag Man or by Rag Mega, they will leave a pile of Rags upon death, from which Rag Man and Rag Mega can revive them. If Rag Man or Rag Mega is killed before them, then they will not leave Rags behind.

### Stage HP

 16
 8

### Found In

 Chance to replace Ticking Spiders and Keepers

### Unlock Method

 Defeat The Lamb

A **Blister** is a Trite variant that has much higher health but leaps very slowly. They occasionally spawn a Dark Ball like the ones spawned by Little Horn. They spawn a Sack upon death.

## Gallery

* A Rag Man's Ragling spawned by Red Champion Rag Man.

## Notes

* If Blisters aren't unlocked yet, they are replaced by Trites in Normal mode, or Ticking Spiders in Hard mode.

## Trivia

* A trite is the name of a genus of the jumping spider family.
* Trites share the same name with an enemy in Doom 3, an enemy that leaps towards the player and has an upside-down human-like face.
* Blisters were given a shooting animation in Booster Pack #5, based on this Steam Workshop mod by TheShadyOne.
* Blisters originally had 54 base hp and 0 stage hp; however, this was changed in Booster Pack #5.
	+ Blisters had the fifth-highest base health of all the non-boss enemies, after Dingas, Mama Guts, MemBrains, and Oobs.
TNT

* Blocks movement.
* Can be destroyed by tears or explosions.
* Explodes when destroyed.
* Small chance to drop a  or a  when destroyed.

## Movable TNT

* Can be pushed around by Isaac and enemies.
* Can be destroyed by tears or explosions.
* Explodes when destroyed.
* Occasionally replaces normal TNT.
* Can be spawned with .
	+ Moveable TNT spawned by Mine Crafter takes a unique cubic appearance.
* Will explode when pushed into a Fire Place.
The Peeper

**The Peeper** is a passive item.

## Effects

* Spawns a familiar that slowly floats diagonally around the room and bounces off walls. The eye blocks enemy shots and deals 8 damage per tick or about 17.1 damage per second to enemies it passes through.
* Gives tears shot from Isaac’s left eye a red appearance.
* All tears shot from the left eye will deal 35% more damage.

## Notes

* The empty eye leaves behind a small blood trail. This doesn't affect anything and is a purely cosmetic effect.
* The Peeper is distinguishable from the eyes emitted from Peep by the size of the pupil, it being noticeably bigger on The Peeper.
* A slightly better Peeper familiar can be spawned by .

## Synergies

* : When used causes Isaac's right eye to be scooped out too with the same benefits as the left effectively granting Isaac a 35% damage boost.
Telekinesis

**Telekinesis** is an unlockable activated item added in *The Binding of Isaac: Afterbirth † (Booster Pack #2)*.

## Effects

* Upon use, for the next three seconds, any enemy shots that come near Isaac are held in place.
	+ After a shot has been held for two seconds, it is fired back as a tear.
		- Reflected tears always do 3.5 damage.
	+ When the effect is about to end, all shots are fired back.
		- Reflected normal tears do 6 damage if they would normally do a half heart damage to Isaac.
		- Reflected normal tears do 7 damage if they would normally do a full heart damage to Isaac.
		- Reflected  shots do 50 damage, and do not harm Isaac.
		- Reflected rocks thrown by  Polty do 35 damage.
* Pushes enemies away for the duration of the item's usage.

## Notes

* The tears can be rammed into enemies while they're held by Telekinesis.  They won't disappear until the effect ends but do no further damage.
* As long as the item is used immediately upon recharging, Isaac is effectively immune to enemy bullets.
* Catching shots from enemies that fire high into the air, like the Tube Worm, is very difficult and not beneficial; in the case of the Tube Worm, shots that are caught will just fall to the ground rather than be fired at enemies.

## Synergies

* : Tears caught by Telekinesis become blue wisps in the outer ring. The wisps are outside the range of Telekinesis, making them vulnerable to shots before they can be converted to wisps. Wisps persist between rooms.

## Interactions

* : The cooldown applies even when used through the ? Card.
* : Does not benefit from 9 Volt, unlike other auto-recharge items.
	+ 9 Volt grants half charge on use, effectively giving Isaac immunity to enemy bullets as long as the item is used immediately upon recharging.
* : A Lil' Battery (or other battery) has to be picked up for another charge. Both charges are expended at once for a longer duration effect.
* : Has no effect.
	+ Car Battery grants 7 seconds of protection, effectively giving Isaac immunity to enemy bullets as long as the item is used immediately upon recharging.
* : Charge gained from Sharp Plug is expended immediately and won't stop enemy shots.

## Trivia

* Telekinesis is based on this Steam Workshop item by Eufuu, originally known as Telepathy.
* This item and the pickup sprite may be a reference to The Matrix, where the protagonist Neo can stop bullets in mid-air when they are directly in front of him, holding out his right hand exactly how it's represented in the sprite.
The Pile

Alternate path

Degraded Boss
Main path

Alternate path

**The Pile** is a boss added in *The Binding of Isaac: Repentance* that can appear in Necropolis, as well as in the Ashpit in the alternate path.

## Behavior

The Pile slowly slides around the room slowly and performs the following attacks:

* Burrows underground, then quickly reemerges elsewhere in the room and fires 5 bone projectiles in a spread towards Isaac. The Pile repeats this attack 3 times in a quick succession. It will generally try to reemerge close to Isaac or directly in his path to cut him off.
	+ Where it might reemerge can be generally determined by the direction its seen travelling just as it begins to burrow, however this is not always accurate and most likely due to a bug: it can sometimes appear in a location it did not appear to be travelling to.
* Summons a Bony with a maximum of 2 alive at once.
* Summons spikes in each of its cardinal directions which start at the edges of the room and move towards the Pile.
* Charges in Isaac's direction and continues until it rams into a wall or an obstacle, creating two diagonal lines of rock waves away from the wall and launching a spray of bone projectiles in Isaac's direction. If it runs into an obstacle it also destroys it along with any other obstacles in a small radius.
	+ The Pile gains dramatically increased knockback resistance while charging.

## Gallery

* The Pile in-game.
* The Pile's appearance in *Antibirth*.

## Notes

* and  prevent Isaac from taking damage from spikes summoned by The Pile.
	+ has no effect on these spikes.

## Trivia

* The Pile originates from a conceptual Reddit post by NotYourSaggitarius on the Binding of Isaac subreddit in 2015. A few days later it was programmed into Rebirth by Kilburn, before being incorporated into the Antibirth mod.
	+ In Antibirth, The Pile could appear as a boss in the Mausoleum.
* It appears to be a skeletal variant of Polycephalus and an even further decayed version of The Stain.
* In its boss art, the rightmost head lacks 2 teeth on the bottom jaw, unlike its enemy sprite.
* The Pile is one of two bosses that can appear in both the main path and the alternate path, the other being Reap Creep.
	+ Because of this, its battle theme will be different, depending on where it's fought. If it's fought in Necropolis, either *Crusade* or *Cerebrum Dispersio* will play, while if it's fought in the Ashpit, *Juggernaut* will play.
The Necronomicon

**The Necronomicon** is an unlockable activated item.

## Effect

* Deals 40 damage to every enemy in the room.
* This item belongs to the  set. Collecting three items from this set will transform Isaac into Bookworm.

## Notes

* Many collectibles will produce effects similar to the Necronomicon, such as depleting a Black Heart or blocking projectiles with .
* The Necronomicon deals a considerable amount of damage to bosses that have multiple damageable parts, e.g. Larry Jr. and The Hollow.
* This item also does high enough damage to instantly kill most non-boss enemies.

## Synergies

* / : Increases the damage from 40 to 80.
	+ **A Missing Page** + **Missing Page 2**: The damage increase stacks for a total of 120 damage.
* : Spawns black wisps on the inner ring. The wisps deal 40 damage to all enemies in the room when destroyed. This is not boosted by , but is boosted by  and .

## Trivia

* *The Necronomicon* is a fictional grimoire appearing in the works of horror writer H.P. Lovecraft.
	+ and  are both references to missing pages of the Necronomicon appearing in Evil Dead.
* The book seems to be bound in human skin, which explains the face on its cover.
	+ The face on the cover is another reference to The Evil Dead franchise, which has the same face on its Necronomicon.

## Gallery

* 3DS The icon of The Necronomicon as seen on the lower 3DS screen.
* Picture of The Necronomicon when activated.
The Poop

**The Poop** is an activated item.

## Effects

* Spawns a pile of Poop where Isaac is standing and knocks back nearby enemies. This pile of poop may yield pickups like regular poop.
	+ Also knocks back pickups and enemy shots upon use.
* This item belongs to the  set. Collecting three items from this set will transform Isaac into a walking pile of poop.

## Notes

* ??? starts with this item by default.
* Can bridge gaps when bombed from the opposite side (as if it was a rock).
* Poops spawned by The Poop may give , which gives better odds at future poop drops.
* If used on top of an obstacle while flying, it will only produce its sound effect, but no poop will be spawned.
	+ This also applies to destroyed obstacles.
* If you have  or , the poop will be destroyed beneath you as soon as it is placed.
* After defeating  Ultra Greedier, all remaining piles of poop in the room will be converted into golden poops.
	+ This effect is purely visual, the "golden" poop acts as regular poop despite the recolor.
* The Poop can be used to destroy retractable spikes when they're retracted.
* If used on top of a destroyed red poop, this will effectively remove it from the room permanently.
* The Poop can rarely drop from buckets in Dross.

## Synergies

* / : Fire will appear behind Isaac when The Poop is used.
* : Spawns wisps on the outer ring, looking like miniature Dips. Wisps' tears have a 2.5% chance to apply  to enemies, turning them to poop.
* : The Poop may be used as a discounted , both for utility, as well as combat.
* : Allows the creation of extra friendly Dips.
* : Deals 10 flat damage to nearby enemies.
* : Using The Poop will always spawn a White Poop.
* : Using The Poop has chance to spawn a Black Poop.
* : Using The Poop has a chance to spawn Golden Poop.
	+ The chance of this effect is 100% at 5 Luck.
	+ The chance of this effect is 100% at 7 Luck.
* : Significantly increases the chance that poop may drop a pickup.
* : Can be used in an incomplete room to repeatedly spawn poop.

## Gallery

* 3DS The icon of The Poop as seen on the lower 3DS screen.

## Trivia

* This item is used in  BRAINS! (challenge #27) and  Scat Man (challenge #36).
* In the flash version, The Poop was unlocked by defeating Mom's Heart 10 times.
* A rare closet exists in Downpour and Dross with The Poop as a guaranteed item. If Isaac has already found The Poop, the item in the closet does not change.
The Horny Boys

**The Horny Boys** are a boss added in *The Binding of Isaac: Repentance* that can appear in Gehenna.

## Behavior

Floats randomly around the room and cycles between the following attacks in the following order:

* Summons a Boom Fly orbited by 3 pink Eternal Fly Bombs.
* Juggles 3 bombs then throws them toward Isaac. Each bomb has a chance of having the  or  effect.
* Chains together numerous consecutive tear patterns while gradually increasing the rate in which they are fired:
	+ 4 cardinal projectiles.
	+ 4 diagonal projectiles.
	+ 4 cardinal projectiles.
	+ 8 projectiles in all directions.
	+ 12 projectiles in all directions.
	+ 8 clusters in all directions, each contains 3 projectiles.
	+ 10 projectiles in all directions, rotating counterclockwise.
	+ 10 projectiles in all directions, rotating clockwise.
	+ 4 diagonal projectiles.
	+ 4 cardinal spreads, each contains 3 projectiles.
	+ 4 diagonal spreads, each contains 3 projectiles.
	+ 8 projectiles in all directions.
	+ 4 diagonal spreads, each contains 5 projectiles.
	+ 10 projectiles in all directions.
	+ 8 projectiles in all directions.
	+ 12 projectiles in all directions.
	+ 12 projectiles in all directions.
	+ 4 cardinal projectiles.
	+ 4 diagonal projectiles.
	+ This attack ends with Hornfel getting sick and vomiting out 3 fireballs that each extend in cardinal directions upon landing.
* Teleports 3 times and throws out a short delay  Bomb each time.

**OR**

* Throws a  Bomb at their feet to create a smokescreen before rapidly teleporting to another location. This attack is repeated 5 times.

## Trivia

* They appear to be a conjoining of Hornfel and Loki.
	+ Furthering this concept is that they appear to share attacks from both bosses.
	+ Additionally, using  against them splits them into their individual entities.
		- Hornfel as a result, is in his 2nd phase, where he cries and attempts to retreat from Isaac, similar to when Isaac breaks his minecart as a Mines boss. He is unable to leave the boss room and may even step onto the spikes present in one of the boss arenas.
		- Hornfel will only drop bomb pickups/items if Loki was killed first.
	+ Their name in the boss VS screen also shows a bomb and a mark, representing both bosses.
* In the Bestiary, they are referred to as "Horny Boys".
* According to Edmund, Hornfel and Loki are siblings.
* Their name may refer to the term used for being sexually aroused, being "horny".

## References

1. ↑ https://twitter.com/edmundmcmillen/status/1491311684144697345?t=HIqu902V3aUtJqXMP5Oz8A&s=19
Thunder Thighs

### Collection Grid

*(page 4, column 9, row 1)**(page 3, column 9, row 4)**(page 3, column 10, row 4)*

*Not to be confused with .*

**Thunder Thighs** is a passive item.

## Effects

* +1 Red Heart container.
* Heals 1 additional Red Heart
* -0.4 speed down.
	+ Also affects maximum speed.
* Isaac gains the ability to destroy obstacles by walking into them.

## Notes

* Holes in the ground can be filled if Isaac walks into adjacent rocks from the right direction, similar to bombs.
* Avoid walking over Mushrooms and Bomb Rocks, as they can damage Isaac upon destruction.
* With this item, Isaac can walk over and destroy Red Poop without taking damage. He will still be damaged if he's above the destroyed Red Poop when it reforms.
* Walking over an Angel Statue in the Angel Room will trigger the boss fight, and Isaac will take damage as the Angel spawns on top of him.

## Trivia

* This item is used in The Tank (challenge #5),  BRAINS! (challenge #27), and  Scat Man (challenge #36).
* The item's sprite is a bucket of nacho cheese. [1]
The Jar

### Collection Grid

*(page 3, column 5, row 9)**(page 3, column 5, row 3)**(page 3, column 6, row 3)*

**The Jar** is an activated item.

## Effects

* Isaac can store up to 4 extra Red Hearts in The Jar if there are no remaining empty Heart Containers.
* When used, all Red Hearts in the jar are dropped on the floor, rather than directly consuming them.

## Notes

* Red hearts are the only type of heart that can be stored. Blended Hearts do not count.
* If used in the two Super Secret Rooms that contain nothing but a Black Heart or Eternal Heart (Room ID's 1 and 6), it will spawn those types of hearts instead.
* If a whole red heart is picked up and Isaac only heals half a heart container, the other half is placed in the jar, indicated by the jar number increasing by one. Despite the jar indicating that it picked up a whole red heart in this fashion, it will only drop half a red heart on use. When picking up a double red heart, the jar will also store the remainder not healed in the same way.
* Co-op babies, except Magnet Baby, cannot add hearts to the jar, as they are unable to interact with pickups.
* The short-lived half red hearts dropped by  Tainted Magdalene can be picked up and stored.
* The item only costs 10 cents when found in a Shop.

## Synergies

* +  as  Judas /  Dark Judas: Instead of dropping hearts on the floor, using The Jar consumes up to one full heart in the jar at a time, giving a temporary +0.66 damage up for each half heart consumed and spawning a puddle of red creep that deals 2 damage per tick (20 damage per second).
* : Consumes stored hearts to spawn heart wisps, rather than releasing heart pickups. Heart wisps have a chance to drop a Half Red Heart when destroyed.
* / : Spawn double the hearts put into the jar, allowing for infinite health to be spawned.
* : Any half red hearts stored by The Jar will be converted to full hearts when dropped on the ground. Since The Jar will store any leftover health from healing Red Heart Containers, this can allow for potentially infinite health when healing half-empty containers. Especially effective in conjunction with  or .

## Interactions

* : Allows for teleportation with no recharge; however, it drops the contained red hearts in the room it was used.
* : The Jar acts as usual, and doesn't double the hearts dropped upon activation.
* : The player cannot pick up extra hearts while The Jar is in the inactive slot.
* : Storing a heart in the jar does not stop the bleeding effect, despite playing the "heart collected" sound effect.

## Gallery

* Concept drawn for The Jar.
* 3DS The icon of The Jar as seen on the lower 3DS screen.

## Trivia

* The Jar is a reference to the Empty Bottles of *The Legend of Zelda*, which *The Binding of Isaac* takes heavy inspiration from. In *Zelda*, empty bottles are recurring items that are used to store a variety of items; this includes life-restoring items such as potions or fairies, which The Jar mirrors by allowing the storage of red hearts.
Vibrant Bulb

**Vibrant Bulb** is a trinket added in *The Binding of Isaac: Afterbirth †*.

## Effects

* Increases all stats while Isaac's active item is fully charged:
	+ +0.25 speed.
	+ +0.75 range.
	+ +0.50 tear falling speed.
	+ +0.20 tears.
	+ +0.10 shot speed.
	+ +0.50 damage.
	+ +1 luck.

## Notes

* The trinket creates no effect if Isaac has no active item.
* Active items that are reusable indefinitely without a charge bar, such as , will allow Vibrant Bulb's effects to be permanent (until the active item is swapped out).
* Vibrant Bulb is slightly less than half as powerful as ; however, its effects are active more often.
* , when used, will not make the Vibrant Bulb inactive and will still provide the bonus until it has one bar of charge.
* Having additional charge beyond full with  does not provide an additional bonus. It does give an advantage however, since using the fully charged item once still provides Vibrant Bulb's effect.
* If two active items are held (), the one currently active must be at full charge for the trinket to take effect (the other one doesn't need to be fully charged).
* Vibrant Bulb produces no effect with active items in consumable slots, e.g.  Tainted Apollyon's  or  Tainted Bethany's .
* If  Bethany or  Tainted Bethany are holding enough soul/red hearts to charge her current active item, the Vibrant Bulb will be active, even if there are no regular charges.
	+ If the active item is fully charged only with soul/blood charges and no regular charges, Vibrant Bulb and Dim Bulb can be both active at the same time if Isaac holds both of the trinkets.
The Void/Locating Delirium

In The Void, locating which boss room may contain Delirium is a surprisingly simple process, it requires imagining the boss rooms as being 2x2 boss rooms. If the 2x2 boss room would be able to exist where it is without having doors to any other rooms, then it is very likely that boss room will contain Delirium.

We will break down this process by using this map as an example case.

## Example 1

Here we see a small cluster of boss rooms very near to each other.

By drawing out what one of these boss rooms would look like as a 2x2 boss room, we can get a clear picture of where this room would be connected by doors to if this was the case. The door the boss room already has is indicated with **green** here, while doors that would show up if this was a 2x2 room are marked in **red**.

Because this room would have multiple doors instead of just one, it is impossible for this room to contain Delirium.

## Example 2

This boss room is out near the edge of the map.

When drawing the outline of a 2x2 boss room here, we can see that this room would only have a single door even if it was a 2x2 boss room.

Because this room would only ever have a single door, we can determine that this room is very likely (though not guaranteed!) to contain Delirium.

## Example 3

Much like example 2, this room is near the edge of the map. However, there is a small trick going on here that may not be obvious at first glance.

This is the full map but with every square numbered. Maps have a maximum size of 13x13; rooms cannot go beyond this limit.

A 2x2 room can be drawn here without any connections to other rooms, but this would go past the 13x13 limit.

Because of this easy-to-miss detail, this room cannot contain Delirium.

## Additional Notes

* It is possible for a floor to contain multiple possible Delirium rooms, though through the above methods you can rule out the rooms which can never contain Delirium.
* If a boss room on the top or right edge of the map causes the full-sized map to be offset as though it were trying to display a room larger than 1x1, that boss room belongs to either Delirium or Mr. Fred.
* will always go directly to Delirium's room, allowing you to safely farm items from all the other bosses before fighting him.
The Pact

**The Pact** is a passive item.

## Effects

* Grants two Soul Hearts.
* Grants two Black Hearts.
* +0.5 damage.
* +0.7 tears.
* This item belongs to the  set. Collecting three items from this set will transform Isaac into Leviathan.

## Trivia

* This item appears on the six of hearts in the official Binding of Isaac Tarot Card deck. In this illustration, the pact is titled "Your Soul," and the body of the contract consists of the text from the bridge of the song "Deal with the Devil," by Judas Priest. The pact is signed by "E" and "R.C."
* has the same appearance of The Pact, but with big, curved horns and slightly less angry eyes.
The Scourge

**The Scourge** is a boss added in *The Binding of Isaac: Repentance* that can appear in the Corpse.

## Behavior

The Scourge floats quickly around the room, attempting to get above Isaac's position. It can perform the following attacks:

* Shoots a large, fast cluster projectile out of its hood that homes in slightly on Isaac. When it hits a wall, it explodes into a spray of projectiles, leaving behind damaging Green Creep and a cluster of Small Maggots.
	+ If The Scourge is below half health, it instead shoots out three slower, smaller cluster projectiles from out of its hood that create fewer projectiles on impact.
* Launches one of its tendrils towards Isaac and embeds it in a wall. It then drags the tendril along the wall, causing projectiles, creep, and Small Maggots to shoot out from the wall.
* Launches two tendrils and embeds them into the wall, one directly at Isaac and one in the cardinal/ordinal direction opposite of him. It then starts rotating its arms around while shooting two rings of 12 projectiles outwards.
* Launches two tendrils to either side of Isaac, embedding them into the wall and trapping him in a triangle-shaped area. It will then perform one of two attacks:
	+ Fires walls of tight projectiles with gaps to pass through from its body. It follows up each wave with an additional, faster projectile aimed directly at Isaac.
	+ Fires horizontally travelling projectiles randomly out from both its left and right tendrils.
	+ If Isaac gets caught out of this triangle space for any reason, The Scourge will cancel this attack.
		- The three previous attacks end if The Scourge or its tendrils take enough damage. Each tendril has a total HP of 400.
		- The Scourge takes damage equal to 25% of the damage its tendrils take.
		- The tendrils passively take heavy damage if they're dragged along a wall, dealing a total of 50 damage to The Scourge for each tendril dragged.
		- The tendrils kill Small Maggots they are dragged into.
* Moves to the center of the room and begins sucking in 2 tight streams of projectiles towards it in a spiral pattern. This spiral pattern can randomly switch directions during the attack. Additional random projectiles can appear in the gap between the two streams, further limiting the space.

## Gallery

* The Scourge in-game.
* Concept art of the Scourge.

## Trivia

* The Scourge gets its name from a type of whip.
* The Scourge resembles the Snapper monster, as they both attack using long, tendril-like whips, have a bottom row of teeth, and have an eye in the middle of their mouth.
	+ It also resembles the Cultist monster, in terms of appearance.
Torn Photo

### Collection Grid

*(page 4, column 6, row 4)**(page 3, column 16, row 5)**(page 3, column 17, row 5)*

**Torn Photo** is a passive item.

## Effects

* +0.7 tears.
* +0.16 shot speed.

## Trivia

* The item sprite appears to be a picture of Isaac and his mother torn where his father is assumed to be.
	+ The Torn Photo can also be seen in Ending 20.
Teleport!

**Teleport!** is an activated item.

## Effects

* Teleports Isaac to a random room on the current floor.

## Notes

* It is possible to teleport to the Secret Room or Super Secret Room.
* It is not possible to teleport to the I AM ERROR room.
* It is not possible to teleport to the Crawl Space for the floor or the Black Market.
* It is possible to teleport to a Super Secret Room with no doors, resulting in the player being stuck.

## Strategies

Possible uses include:

* Teleporting out of dangerous situations.
* Avoiding spiked door damage going out of a Curse Room.
* Teleporting into Challenge Rooms if you don't meet the health requirements to get in.
* Escaping from Challenge Rooms or Boss Rush after picking up a chest or collectible, avoiding the fight.
* Escaping from Mom's boss room, due to there being no exit after defeating her.

## Interactions

* : Spawns blue wisps in the middle ring. Wisps' tears have a 10% chance of teleporting non-boss enemies to a random location in the current room on hit. Wisps also temporarily vanish every 5 seconds, preventing them from blocking shots or taking/dealing damage.
* : No effect.

## Trivia

* This item is a nod to Spelunky's Teleport item.
* It is also a small nod to Dr. Fetus' many remotes in Super Meat Boy.
* The V1.06.J787 patch notes states the item 'allows the player to influence the teleport direction (using the direction Isaac is moving upon activating the item)'. This effect was never planned to be added into the game, and was put in the changelog because of misunderstanding.

## Gallery

* 3DS The icon of Teleport as seen on the lower 3DS screen.
The Mulligan

This article is about the item. For the enemy, see Mulligan.
**The Mulligan** is a passive item.

## Effects

* Tears have a 1/6 chance of spawning allied Blue Flies when they hit an enemy.
* This item belongs to the  set. Collecting three items from this set will transform Isaac into a giant humanoid fly.

## Notes

* Because the  transformation includes the guaranteed ability to spawn flies on hit, the Mulligan's effect is nullified. This means individual tears cannot spawn more than one fly per hit.
	+ Guppy has a 50% chance of spawning a fly, allowing the 2 items to work together.
* This item does not work for  Lilith since the  tears do not count for her tears.
* Items and trinkets that increase tear firing rate synergize well with the Mulligan.
* This item is not affected by luck.

## Synergies

* Azazel/: Rapid damage ticks can cause large amounts of blue flies to spawn.
* : The Mulligan's ability isn't affected by the charge time, meaning rapidly firing uncharged shots will generate a ton of blue flies.
* / : Has a 1/6 chance to spawn a fly on every hit by a split shot, which boosts the spawning of flies immensely.
* : Bombs have a chance to spawn blue flies when damaging enemies.
* : Rapidly spawns blue flies when pointed at an enemy.
* : Fires have a chance to spawn blue flies.

## Interactions

* : Overrides The Mulligan.
* : Overrides The Mulligan.
* : Flies only have a chance to spawn if the knife is stationary.

## Trivia

* This item is used in The Host (challenge #18).
* The term "mulligan" means a second chance to perform an action, usually after the first chance went wrong through bad luck or a blunder.
Tick

## Effects

* Removes 15% of any enemy's health if they have 60 HP or higher.
* Gives Isaac one Red Heart if he enters an unexplored Boss Room.
* Once picked up, it can't be removed.
	+ The Tick can be replaced by .
		- The Tick cannot be replaced with the  if Isaac has  or .
	+ The Tick can be removed by absorption by , , and Gulp!.
	+ The golden version can be dropped or replaced by another trinket.

## Notes

* This trinket can be used to infinitely replenish health if Isaac has access to any infinitely usable teleportation effect (such as  + ).
* Only works on the first stage of multistage bosses.
* Friendly enemies are also affected by the health removal when above 60 hp.
* This trinket's effect can be multiplied to a maximum of x2 through any combination of multiple copies and . This also includes multiplying the healing effect when entering a Boss Room.
* This trinket's effect can be stacked via any combination of multiple copies, golden variants, and  with enough stacks causing any enemy above 60 hp to have the lowest amount of health possible with any amount of damage killing them. This also includes stacking the healing effect when entering a Boss Room. The HP removal stacking effect is equal to 0.85 ^ Number of Tick Instances, with golden trinkets adding on 2 to this.
* Has no effect on the Ultra Harbingers. Works on both phases of Dogma.

## Trivia

* Being able to replace the Tick with Match Stick is a reference to how one can remove a tick that has latched onto their skin in real life with a heated tip of a match stick; however, removing a tick like this can expose oneself to disease-causing bacteria present in the tick. It is also a feature that was carried over from the original *The Binding of Isaac*, though it's unclear why it wasn't originally added in *Rebirth*.
* The Tick is the only trinket that passively changes Isaac's appearance.
* The Tick bears similarity to a real-life deer tick.
* This trinket is used in The Host (challenge #18).
Treasure Map

**Treasure Map** is a passive item.

## Effects

* Reveals the map of each floor. It does not identify special rooms and does not reveal the locations of Secret Rooms / Super Secret Rooms.

## Notes

* When combined with  and , the entire floor is revealed, identical to the effect of .
* Although not explicitly revealing it, the Boss Room can *usually* be found by locating the room farthest away from the starting room.

## Synergies

* : Can make it easier to gain  as Book of Secrets cannot give a mapping effect Isaac already has.
* : If Liberty Cap triggers the effect of , it will last for the remainder of the floor.

## Gallery

* Treasure Map's icon (on the left), alongside other mapping icons.

## Trivia

* Treasure Map received a significant downgrade in *Rebirth*, as it no longer reveals Secret Rooms. That effect, along with being able to reveal Super Secret Rooms, now belongs to the .
* This item is used in Cursed! (challenge #10).
* This item is likely a reference to the *Legend of Zelda* franchise, in which dungeon maps are commonplace.
* Under the minimap, 's icon will override the icon of this item.
* This item can be found as one of the Nintendo-themed Treasure Room items in the 6th of December's Daily Run, which is an homage to the late CEO of Nintendo, Satoru Iwata.
Torn Pocket

**Torn Pocket** is an unlockable trinket added in *The Binding of Isaac: Repentance*.

## Effects

* Upon taking damage, Isaac drops 2 random Pickups from his inventory (except Hearts, Pills, or Cards).

## Notes

* All pickups are subjected to standard pickup spawn rules, which means that trinket's effect won't necessarily result in a net neutral.
	+ Coins dropped have a chance of being replaced with a Golden Penny, Lucky Penny, Nickel, Sticky Nickel or Dime.
	+ Bomb dropped have a chance of being replaced with Double Bomb, Golden Bomb, Troll Bomb or Mega Troll Bomb.
		- When a dropped bomb is replaced with a Troll/Megatroll bomb, the game will still subtract that bomb from the total bomb count.
		- Giga bombs, however, can't be dropped if Isaac has them, but their count will still be retained unless the bomb count reaches 0.
	+ Keys dropped have a chance of being replaced with Golden Keys or Charged Keys.

## Synergies

* : This can be used to infinitely generate Soul Hearts as long as you have a coin.
* : Dropped bombs will be their doubled variants.
* : All dropped pickups have a chance to be replaced with doubled variants.
* Keeper and  Tainted Keeper: There is a 55.555...% chance that at least one consumable dropped will be a coin, effectively giving him a 55% chance to undo any damage he takes.
* : Can be used to infinitely generate pickups when down to half a Heart by re-entering a room to regenerate a Soul Heart.

## Interactions

* : No effect.
* : Coins and Keys will be replaced with other pickups starting from Chapter 4.
* Tainted ???: Does not drop poop nuggets after taking damage.
The Relic

This article is about **The Relic**, similar in appearance to Dogma (Item).
**The Relic** is an unlockable passive item.

## Effect

* Spawns a small blue cross familiar that follows Isaac and drops a Soul Heart alternatingly:
	+ Every 5 or 6 rooms.
	+ Every 7 or 8 rooms.

## Notes

* Familiars that follow behind Isaac have a certain priority in how close their position is to him over other familiars, with The Relic having the lowest priority at 6th and thus being farther from Isaac than familiars of different priorities.

* Having multiple copies of The Relic, such as duplication through , will have each copied familiar paying out with soul hearts. ( Lilith) can make use of this during Boss Rush, having the ability to duplicate the relic using the .

## Synergies

* : The familiar requires one less room clear to drop a soul heart.

## Trivia

* A relic usually consists of remains of a saint or holy person, such as the tooth of Mary Magdalene.