recursal/Fanatic-Fandom huggingface dataset:
Terra

**Terra** is a passive item added in *The Binding of Isaac: Repentance*.

## Effects

* +1 damage.
* Isaac's tears become rocks that have extra knockback and have a chance to destroy obstacles (including walls to Secret Rooms, the mirror in Downpour/Dross, entrances to Mines/Ashpit and Bedrooms, and normal closed doors).
	+ Rocks can be pushed onto holes to cover them as if they were bombed normally.
* Rock tears randomly deal increased/decreased damage, varying between x0.5 and x2 Isaac's damage per tear.

## Notes

* Despite the chance to deal lower damage per shot, the increase to the damage stat results in a higher average DPS.
* Terra bypasses Blasters' 75% damage reduction.
* Terra can destroy the armor of Tuff Twins and The Shell.

## Synergies

* Azazel/: Beam will sometimes destroy rocks, but will not open doors or Secret Room entrances.
* : Locked doors can be opened by shooting at them.
* : The finger will destroy rocks.
* : Controllable rock tear that will destroy rocks. The size of the tear changes per room.
* : The knife will sometimes destroy rocks. Rocks can be destroyed by walking into them.
* : Gains increased knockback and will sometimes destroy rocks.

## Interactions

* / : Explosions retain the extra damage and knockback, but cannot destroy Key Blocks.
* Spectral tears: Tears continue to destroy obstacles.
* : Sword swings and spin attacks cannot destroy rocks, only its projectiles.
* Tainted Lilith: The damage from hitting enemies with the fetus is affected by Terra's damage randomization.
* : Lasers can still destroy rocks, but at a lower rate and will no longer open entrances to secret rooms.

## Trivia

* Terra originates from the *Antibirth* mod.
* "Terra" is the word for "earth" in Latin and some of its descendant languages, and is sometimes used to distinguish the Earth of the Solar System from other inhabited planets in science fiction.
Teratoma

Degraded Boss
Small
Main path

Alternate path

Medium
Main path

Alternate path

Large
Main path

Alternate path

**Teratoma** is a boss that can appear:

* In all environments of Chapter 4 (Womb, Utero, Scarred Womb).
* Only in the Utero.

The large Teratoma has 60 HP, the medium forms have 15 HP, and the small forms have 8 HP, for a total of 153 HP.

## Behavior

* Moves around the room slowly, bouncing off the walls.
* When enough health is depleted, the one large Teratoma breaks into three medium Teratomas.
	+ Medium forms behave identically, but move slightly faster.
* Each of the three medium Teratomas breaks into two small Teratomas.
	+ Small forms behave identically, but move very fast.
* Each of the smallest Teratomas spawns two Spiders on defeat unless they are over a pit or other obstacle.
* All stages of Teratoma will do 1 full heart of contact damage.

## Gallery

* Teratoma in-game.
* Medium-sized Teratoma.
* Small Teratoma.
* Teratoma as one of  Delirium's forms.
* Teratoma's appearance in Corpse.
* Sketches for Teratoma and other bosses for the original Binding of Isaac's Wrath of the Lamb DLC.

## Trivia

* Teratoma was added in the *Wrath of the Lamb* DLC for the original *The Binding of Isaac*.
* It is the posthumous form of Fistula.
* A teratoma is a rare tumor that contains tissues that are atypical for its placement in the body. This can include hair, teeth, bones, and so on.
* Unlike the original *Binding Of Isaac*, Teratoma doesn't bounce off of Rocks.
* Teratoma is one of the three bosses that can be spawned by It Lives, the other two being Chub and Polycephalus.
	+ It Lives can now spawn Fistula as well.
The Virus

**The Virus** is a passive item.

## Effects

* Inflicts poison on enemies who make contact with Isaac.
	+ The poison deals 2 damage per tick (3 damage per second) and lasts for 2-3 ticks.
	+ The poison deals Isaac's damage per tick (1.5x Isaac's damage per second) and lasts for 2-3 ticks.
	+ The poison deals Isaac's damage per tick (1.5x Isaac's damage per second) and lasts for 6 ticks for normal enemies and 3 ticks for bosses.
	+ The poison lasts for 6-7 ticks and deals damage equal to `(0.2*HeartContainers^2) + 2`, where `HeartContainers` is the total number of heart containers and  Bone Hearts Isaac has.
		- The poison can be continuously applied to bosses, which normally are immune to status effects for a brief time after being inflicted with one.
* Lets Isaac deal 24 contact damage per tick on top of applying poison (48 damage per second).
* Enemies who are killed after they have been inflicted with this type of poison have a 20% chance to drop Black Hearts.
* -0.1 speed down.
	+ This is not applied until the next time Isaac's speed stat is updated.
* +0.2 speed up.
* This item belongs to the  set. Collecting three items from this set will transform Isaac into a buff berserker.

## Notes

* This item can drop from Lust.
* The black heart is only dropped if the poison was caused by The Virus. The item's effect doesn't extend to poison tears.
* If an enemy doesn't do contact damage, The Virus can safely be applied to it for more chances at black hearts. Flies, Mulligans, and Hosts are the most common enemies this can be applied to.
	+ With , Hives and Swarmers will constantly spawn normal Flies, meaning they can be endless sources of Black Hearts.
	+ Although  Stonies and Shopkeepers can't be visibly poisoned, they still can drop Black Hearts if destroyed after being touched.
* Enemies won't start taking poison damage if they are pushing up against Isaac; The Virus will be constantly trying to apply poison and refreshing the ticks where poison damage would occur.
	+ and The Virus can still work if Isaac has a short-range orbital such as  or , as it will kill enemies pushing against Isaac that are not taking poison damage while still dropping Black Hearts.

## Synergies

* : When Isaac uses Abyss to absorb The Virus it turns into a green locust that poisons enemies.
* Invulnerability: Contact while invincible poisons enemies.

## Interactions

* : The speed down from the Virus does not stack with the Odd Mushroom; if both are collected, only a total of -0.1 applies.

## Unlockable Achievements

* Little Baggy - Pick up any 2 of the following items in a single run: , , , , and  ( Any 2 items that have the 'syringe' item tag).

## Trivia

* Upon picking up The Virus, Isaac looks very similar to Lust, which is fitting since Lust also drops The Virus.
	+ As such, The Virus may be a reference to an STI.
There's Options

This article is about an item affecting Boss rewards. For a similar item affecting room clear rewards, see Options?. For a similar item affecting Treasure Rooms, see More Options.

### Collection Grid

*(page 3, column 5, row 5)**(page 3, column 5, row 1)*

### Unlock Method

 Donate 50 Coins to the Donation Machine

**There's Options** is an unlockable passive item.

## Effects

* Two items appear after defeating a Boss. Only one can be taken; the other will disappear.

## Notes

* If the boss has a fixed item drop such as The Harbingers, the other item will be selected from the normal Boss item pool.
* Two items appear after clearing Boss Rush.
* Both items that appear after defeating a Boss in The Void are from random item pools. Likewise, both items that appear after defeating The Fallen are Devil Room items.
* There is no effect on items dropped by Mini-Bosses.
* There is no effect on what appears after defeating Mom, even if  /  have not unlocked (in which case only 1 Boss item will appear).
* Does not retroactively affect Boss Rooms that had already been cleared prior to picking it up.

## Synergies

* / : Both items are copied, allowing Isaac to take both copied items without the other disappearing. The original pedestals will function as normal, removing the other if one is collected.
* Jacob and Esau: Both brothers can take one item each if they are lined up properly.
* : Both items will be Devil Room items; only one can be bought.
* : The item which appears after defeating the copied boss is also affected.

## Trivia

* ' description is "There's options". It's the other way around for this item.
The Boomerang

### Collection Grid

*(page 4, column 3, row 4)**(page 3, column 13, row 5)**(page 3, column 14, row 5)*

**The Boomerang** is an activated item.

## Effects

* On use, Isaac readies the Boomerang. Pressing a fire key will throw it in the chosen direction, and it will return shortly afterward.
* Any pickups hit will return to Isaac with the Boomerang.
* Enemies hit by it will take double Isaac's current damage and are petrified for about 2 seconds.
* Boomerang pierces enemies it hits.

## Notes

* The Boomerang starts to recharge only after it has returned to Isaac.
* The Boomerang can grab pickups from afar, even over obstacles.
* The Boomerang can be used to destroy any Shopkeepers.
	+ If Isaac has low damage, the shopkeeper won’t get destroyed and will instead flash red as if taking damage.
* The Boomerang can damage Host and Mobile Host enemies even while under their shells.
* The Boomerang's range scales with Isaac's range stat.
* The Boomerang's range scales with Isaac's tear height.
* The Boomerang can hit and stun The Haunt or Lil' Haunts even when they are invincible.
* The Boomerang is unable to pick up  Sticky Nickels, or Chests.
* With enough speed, it is possible to have two Boomerangs in the air at the same time.
* The Boomerang can grab troll bombs.
* The item only costs 10 coins when found in a Shop.

## Synergies

* : Spawns wisps in the middle ring. Wisps' tears have the  effect and do not persist between rooms.

## Interactions

* : No effect.
* /  /  / 's revive: The Boomerang loses almost all of its range, and can only be improved with tear height ups.

## Trivia

* The Boomerang is a recurring item in *The Legend of Zelda* series. The icon used is the same one as in the first *The Legend of Zelda* game.
* This item is used in  I RULE! (challenge #26).
* 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.

## Gallery

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

**The Harbingers** is the achievement that unlocks Famine, War, Pestilence, and Death as four additional bosses. **The Harbingers** are referenced in the Bible as the Four Horsemen of the Apocalypse. These bosses are only unlocked once Mom has been defeated for the first time. These bosses, with the exception of Conquest and The Headless Horseman, are guaranteed to drop either a  or a . By default, there is a 10% chance the current floor's boss will be a Harbinger unless the floor has a fixed boss (for example, Mom in Depths and Necropolis) or the Harbinger has been fought already. By using the  on a floor, it is guaranteed that the boss will be a Harbinger.

## Pestilence

Pestilence is the Harbinger for Chapter 2.

## War

War is the Harbinger for Chapter 3. War cannot be found in Depths II, Necropolis II, or Dank Depths II as Mom will always be the boss of that floor.

## Death

Death is the Harbinger for Chapter 4. Death cannot be found in Womb II, Utero II, or Scarred Womb II as Mom's Heart or It Lives will always be the boss of that floor.

## Conquest

Conquest is an alternative boss to Death in Chapter 4. He is unlocked once 10 items have been taken from Angel Rooms. Conquest does not drop normal Horseman items, instead dropping .

## The Headless Horseman

The Headless Horseman can appear in the place of any Harbinger. Like Conquest, he doesn't drop normal Horseman items, instead dropping .

## Unlockable Achievements

* The Book of Revelations - Defeat a **Harbinger**.

* 7 Seals - Defeat all 5 Harbingers.

## Trivia

* Conquest was added in the *Binding of Isaac: Wrath of the Lamb*. In the Bible, Conquest is actually the first Horseman to appear, while Pestilence is a Horseman existing only in popular culture, coming from a different translation of the Greek word 'Thanatos', often meaning Death instead (the canon four Horsemen, thus, are Conquest, War, Famine and Death).
	+ Conquest's entry in the secrets is called "The Forgotten Horseman", because of that very reason.
* Death is the only horseman specifically given a name in *The Book of Revelation*.
* The use of the  item to summon a horseman for the current floor is reference to the fact that the book of the Bible in which the horsemen are described is Revelation.
* None of the Harbingers have a death animation.
* Under normal circumstances, Conquest and The Headless Horseman are 2 of only 5 bosses (the others being Krampus, The Fallen, and Baby Plum if spared) who drop or can drop active items upon defeat.
	+ Bumbino can drop active items if paid 12 coins, but this does not defeat him in the traditional sense.
	+ As for abnormal circumstances, the use of Filigree Feather allows the Angels to drop active items, and the use of Satanic Bible allows nearly any boss to drop an active item.
* The horses used by the Harbingers resemble stick horses.
The Gamekid

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

## Effects

Turns the character into a Pac-Man-like creature for 6.5 seconds and provides the following effects:

* Gives invulnerability.
* Inflicts fear on all enemies.
* Removes the ability to shoot tears.
* Allows Isaac to deal 40 contact damage to enemies, at the rate of 1 hit per second per enemy.
* Allows Isaac to deal 20 contact damage to enemies, at the rate of 2 hits per second per enemy.
	+ If an enemy is at 40 HP or less, the contact damage is increased to 40 for that enemy.
* Each enemy that dies during the duration has a chance to replenish a Half Red Heart even if they weren't killed by Isaac's contact damage.

## Notes

* The invulnerability effect negates all forms of damage, including health loss from Blood Donation Machines and Devil Beggars.
	+ This also negates damage from entering or exiting a Curse Room, but the effect is immediately removed upon walking through the door.
* Does not prevent Red Heart container loss from Health Down pills or Devil deals.
* This item is very similar to , trading the extra speed for the ability to gain health from killing enemies.
* Power Pill! has the same effect as The Gamekid, same goes with  on getting hit.

## Synergies

* : With some damage source while this item is active, it can be permanently invulnerable inside the room while you have enemies.
	+ If combined with , it will be easier to achieve invincibility.
* : The fly can still be controlled while invincible.
* : Spawns wisps in the inner ring, looking like little Pac-Men. Wisps' tears have the  effect and can inflict fear on enemies.
* : Doubles the length of invincibility, but no effect on damage.
* does contact damage in the same direction it was being held at the time of using it, giving a massive amount of free damage by ramming into an enemy.
	+ If you have the Yes Mother? Transformation, you can basically do the same thing using this item.
* Damage on contact items (, , etc.) and Orbital Familiars (, , etc.): Deals damage on top of The Gamekid's damage and invincibility.

## Interactions

* Ace Cards: Enemies that are turned into pickups don’t have a chance to heal Isaac.
* /: Enemies that are turned into Poop don’t have a chance to heal Isaac.
	+ Usually turns non-boss enemies into poop when Isaac attempts to deal contact damage making heals off of contact damage kills much harder.
* Freeze Effects: Isaac's contact damage can't freeze enemies however other effects that can still freeze enemies while the item is active do not grant the chance to heal Isaac.

## Trivia

* Beating the game whilst under the effects of The Gamekid will cause the credits music to be sped up.
* This item's name and appearance are references to the Nintendo Game Boy.
* The pickup quote and Isaac's appearance while under the effects of The Gamekid are references to *Pac-Man*.
* *Tetris* appears to be the game being played on The Gamekid. *Tetris* was also the launch title for the Nintendo Game Boy.

## Gallery

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

**Tinytoma** is an unlockable passive item added in *The Binding of Isaac: Repentance*.

## Effects

* Grants a large orbital similar to Teratoma that slowly orbits Isaac.
	+ The orbital repels enemies that touch it and deals 3.5 contact damage to enemies, once per second.
* After blocking 3 shots and/or dealing 3 ticks of contact damage, the orbital splits into two smaller ones that orbit opposite of each other. They behave the same as the original, except they are smaller and can only take 2 hits before being destroyed, bursting into 3 blue spiders in the process.
	+ 5 seconds after both orbitals are destroyed, the original, full-size orbital respawns.

## Notes

* If there is a spiked rock in the room, Isaac can destroy Tinytoma with them to spawn lots of blue spiders, as Tinytoma will respawn after being destroyed.
	+ This can be done until the maximum of 64 blue spiders/flies is reached.

## Trivia

* Tinytoma is from the *Antibirth* mod. In *Antibirth*, destroying Polyps on the Corpse floor had a chance to drop Tinytoma and could even drop the item before it was unlocked.
The Compass

**The Compass** is a passive item.

## Effects

* Reveals the locations and types of all special rooms on the map, except Secret Rooms and Super Secret Rooms.

## Notes

* The following rooms will be revealed if they exist:

* Arcade
* Boss Challenge Room
* Boss Room
* Challenge Room
* Clean Bedroom
* Curse Room
* Dice Room
* Dirty Bedroom
* Library
* Mini-Boss Room
* Planetarium
* Sacrifice Room
* Shop
* Treasure Room
* Vault

* When combined with  and , the entire floor is revealed, identical to the effect of .

## Synergies

* : It is easier to gain  as Book of Secrets cannot give a mapping effect Isaac already has.

## Gallery

* The Compass's icon (second from the right), alongside other mapping icons.

## Trivia

* The compass icon is the same as the one from the the game *The Legend of Zelda*.
* This item is used in Cursed! (challenge #10).
* 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.
The Cage

Double Trouble

Degraded Boss
Main path

Alternate path

**The Cage** is a boss that can appear:

* Only in the Depths.
* In the Depths and the Dank Depths.

## Behavior

* Leaps off-screen and tries to land in Isaac's path; predicting his movement. Leaves a small puddle of damaging Grey Creep and sends out 4-5 lines of rock waves upon landing.
* Quickly shoots 6 streams of 3-7 projectiles in a spiral pattern, similar to Mom's Heart/ It Lives.
* Curls up in a ball and rolls towards Isaac, bouncing off walls and obstacles around the room.
* Spawns a grey-coloured Vis that shoots a brown-coloured  laser.
	+ The different colours are purely cosmetic, and it behaves exactly like a normal Vis.
	+ Any Vis caught in The Cage's rolling attack will be killed.

## Champion Versions

 **Green**: Periodically leaves puddles of Green Creep and doesn't spawn any Vis.
 **Pink**: Two Cages, each with 50% HP (400), replace the normal Cage. They never perform their jump attack.  Both Cages are ~50% smaller.
## Gallery

* The Cage in-game.
* The Green Champion Cage.
* The Pink Champion Cage.
* The Cage as one of  Delirium's forms.
* Unused pre-release sprite for The Cage found among the Room Editor files.
* Concept art of The Cage on the right side, along with other Rebirth boss concept arts.
* Original Cage Vis sprite.
* Cage Vis sprite in Repentance.

## Notes

* and  make Isaac immune to The Cage's rock waves, since it is considered to be the same as explosions by the game.
* When The Cage jumps, there is a delay to his falling animation, causing Isaac to be hurt before The Cage falls back down.
* If Isaac is flying on Pits, The Cage can hit Isaac if it jumps towards him, and it will then be pushed back to the ground.

## Trivia

* It has the highest health of any boss fought before Mom's Heart.
	+ Despite being a possible encounter before Mom, The Cage has more HP than her.
* It is the posthumous version of Mega Fatty. It appears to have lost its head.
* Although The Cage is a dead version of Mega Fatty, it also bears a lot of resemblances to a giant Vis as well, since it is a fat headless body with a giant cut in its belly. Another slight nod to their resemblance is The Cage's ability to spawn Vis with a Grey color palette and a Brown Brimstone laser.
* The stitches on the Cage's body resemble Y-shaped incisions commonly made at the start of an autopsy.
The Belt

**The Belt** is a passive item.

## Trivia

* In his first post-Repentance Lore Stream, Edmund McMillen revealed that The Belt is inspired by a real belt that his step-father would crack menacingly to threaten him with.
	+ The Belt granting a speed up is a nod to the act of running faster out of fear of being hit
	+ In this way, The Belt is a counterpart to , which is also a speed-up item based on a specific object used by McMillen's parents to abuse him.
The Halo

**The Halo** is an unlockable passive item.

## Effects

* Grants one full Red Heart container.
	+ Heals 1 additional Red Heart.
* +0.3 damage.
* +0.2 tears.
* +0.25 range.
* +1.5 range.
* +0.3 speed.
* +0.5 tear falling speed.
* This item belongs to the  set. Collecting three items from this set will transform Isaac into an angel.
The Binding of Isaac Merchandise

## The Binding of Isaac: Four Souls

The Binding of Isaac: Four Souls (or just "Four Souls") is the official TBoI card game. The game is for 2 players or more, and is about deceiving others, kill each other, looting, gaining items, and winning souls.

There is an official website here, which shows everything you need to know:

* *https://foursouls.com/*

## Maestro Media

There are a lot of The Binding of Isaac merchandise, but the most popular is from the Maestro Media store. The store includes plushies, figures, and a Binding of Isaac card game. Maestro Media isn't just a Binding of Isaac store, it also has Hello Kitty, Sally Face, and many other things.

*https://maestromedia.com/*

## Youtooz

There was a collaboration with The Binding of Isaac, and Youtooz. Youtooz is a figures company, which do collaborations with other companies, or people. The two figures were Isaac, and ???.

These are a limited run, so they could be out.

*https://youtooz.com/*

## G Fuel

Another collaboration with The Binding of Isaac is G Fuel. G Fuel is an Energy formula, which you put a spoon full into water. The first flavor is "Isaac's Tears", which is flavored "White Grape Pineapple 😭", and the second flavor is "Brimstone", which is flavored "Cran-Raspberry".

These are a limited run, so they could be out.

*https://gfuel.com/*
The Mind

### Collection Grid

*(page 4, column 8, row 3)**(page 3, column 8, row 5)**(page 3, column 9, row 5)*

### Unlock Method

 Defeat Satan as  The Lost

**The Mind** is an unlockable passive item.

## Effects

* Grants the combined effects of the , , and , revealing the floor layout and all special rooms, including Secret Rooms and Super Secret Rooms.

## Synergies

* : Immediately gives the  effect for the floor upon use.

## Gallery

* The Mind's icon (on the right), alongside other mapping icons.

## Trivia

* This item, along with  and , are references to the Three Primes of Alchemy.
	+ The designs of these items appear to be that of Triquetra, a Christian symbol of the Trinity.
* The item's description, along with those of  and , are references to the three attributes commonly ascribed to God in Christian theology: omniscience, omnipotence, and omnipresence. For The Mind, it is omniscience, the ability to "know all".
* This item might be referencing Solomon from the Bible, who became unhappy with life after gaining preposterous wisdom - which is why Isaac might look so done with everything in the item sprite.
* The Mind's icon under the minimap overrides the icons of other mapping effects.
Steam Sale

**Steam Sale** is a passive item.

## Notes

* This item can drop from Greed, as well as a rare drop from Shopkeepers.
* Items sold for 15 pennies will have their price reduced to 7.
* Pickups sold for 5 pennies will have their price reduced to 3. Red Hearts, normally sold for 3 pennies, will have their price reduced to 2.
	+ Grab Bags, normally sold for 7 pennies, will have their price reduced to 3.
* Multiple Steam Sales can be obtained via each of the normal drop methods.
	+ Multiple Steam Sales have no effect.
	+ After obtaining 2 Steam Sales, all shop prices are set to 0 coins.
	+ Multiple Steam Sales only further reduce prices, with each additional copy lowering prices less.
		- The price is lowered to

		p
		r
		i
		c
		e

		n
		1

		{\displaystyle \frac{price}{n+1}}

		, where *n* is the number of Steam Sales. For example, an item with 3 Steam Sales would cost

		15

		4

		{\displaystyle 15 \over 4}

		 pennies, which is rounded up to 4.
* Steam Sale will cause the Deals with the Devil not to convert the type of required heart automatically.
* Prevents shops from having natural discounts on top of the Steam Sale discount.

## Synergies

* : Both of the discounts stack, selling familiars for 5 cents.
* : The discounts stack.
* : Can be used to create two Steam Sales, reducing the price of all items in the shop to 0.
	+ **Diplopia** +  or Greed mode: Restock will allow shop items to replenish indefinitely, so by having multiple Steam Sales by the methods above, infinite items may be purchased. Be careful not to pick up , which will remove the Steam Sales and will likely replace many items with .
	+ Each additional Steam Sale will further reduce the price of all items in the shop, down to a minimum of 1 cent.

## Interactions

* : Devil Deals and Black Markets will have their price reduced. Shop items will cost the same amount of health.
* When playing as Keeper the discount applies to Devil Deals aswell.

## Trivia

* This item is called **Steamy Sale** on the PS Vita and Xbox One versions, most likely due to fear of copyright issues.
	+ This was also the case on the PS4 and Switch versions but was later reverted to Steam Sale in Booster Pack #5.
* Steam Sale refers to the platform of Steam and its reputation for giving generous sales.
The Bloat

Degraded Boss
Main Path

Alternate path

**The Bloat** is a boss that can appear in Necropolis and:

* All environments of Chapter 4 (Womb, Utero, Scarred Womb).
* The Utero.

## Behavior

* Unlike Peep, The Bloat's eyes are dislocated at the start of the fight.
	+ The Bloat's eyeballs float diagonally bouncing off of walls and do not take damage. They block Isaac's tears and inflict contact damage.
* Performs a small jump in place and fires eight projectiles in all directions.
	+ Unlike Peep's, The Bloat's projectiles are always shot in the same orientation.
* Creates large puddles of Red Creep.
* Jumps into the air and travels a moderate distance in Isaac's direction, leaving a small puddle of Red Creep and sending out a ring of eight projectiles upon landing.
* Fires 2  lasers below him or to both sides of him, depending on Isaac's location.
	+ He can not perform this attack upwards.

The Bloat deals a whole heart of contact damage.

## Champion Versions

**Green**: Fires 2  greenish-red/ green  projectiles instead of blood shots when performing a small jump, and 3 when jumping off-screen. Spawns 2 Charger whenever he creates large puddles of Creep.  Creates Green Creep instead of Red Creep.
## Gallery

* The Bloat in-game.
* The Green Champion Bloat.
* The Bloat as one of  Delirium's forms.
* Sketches for The Bloat and other bosses for the original Binding of Isaac's Wrath of the Lamb DLC.

## Notes

* The Bloat's eyes can be destroyed with , ,  or .

## Trivia

* The Bloat was added in the *Wrath of the Lamb* DLC for the original *The Binding of Isaac*.
* He is the posthumous version of Peep.
* Bloat is a medical condition in which the stomach becomes overstretched by excessive gas content.
	+ Corpses also bloat during decomposition due to the excessive build-up of gas-releasing bacteria.
* The Bloat's eyeballs look slightly different than Peep's.
	+ The Bloat's eyeballs are now very different than Peep's.
* Aprils Fool (challenge #32) replaces all bosses with The Bloat as a reference to the exceptional hatred some fans express towards this boss.
The Common Cold

**The Common Cold** is a passive item.

## Effects

* Adds a chance to shoot poison tears, dealing damage over time when inflicted.
	+ The poison randomly hits either 2 or 3 times, dealing a total of 4 or 6 damage.
	+ The poison hits 2 times, dealing a total of 2x Isaac's damage.

## Notes

* The chance to fire slowing tears depends on the luck stat, and the formula used to determine the chance is:

1

4
−

⌊

L
u
c
k

∗
0.25

⌋

{\displaystyle \frac1 { 4 - \left \lfloor \mathit{Luck} \* 0.25 \right \rfloor}}

	+ At base luck (0), the chance is 25%, maxing out at 100% at 12 luck.

## Synergies

* : When Isaac uses Abyss to absorb The Common Cold it turns into a green locust that poisons enemies.
* ///: Chance for tears and split tears to be poisonous. If the main tear is poisonous, the split tears are too.
* /: Chance for bombs/explosions to become poisonous like .
* : Finger can also apply the poison effect.
* : If a poison tear is fed, all burst tears are poisonous. If a normal tear is fed, the burst tears are not poisonous.
* : The tear flickers green, capable of poisoning enemies when it does.

## Interactions

* /: Overrides The Common Cold.
* : Both poison effects work, but poison caused by Common Cold will not cause Black Heart drops. There is no way to tell which poison is applied.
* : Activation rates are individually applied to each tear, effectively allowing for higher amounts of poison tears. However at 12 Luck, the trinket will not do anything for Isaac as The Common Cold is guaranteed to make every tear poisoned at that point.

## Trivia

* In the original *The Binding of Isaac*, this item also belonged to the Devil Room pool.
* In the original game, this item was unlocked by collecting two of the following items in one run: , ,

## References

* The Binding of Isaac Item Trigger Testing
The Binding of Isaac: Afterbirth † (Pre-Release)

## December 7 Update (Update #1)

The DLC was announced. The bestiary, item pool editor, room editor, animation editor, and Lua support were shown.

## January 5 Update (Update #2)

The DLC will be coming out this year! Like Afterbirth, it needs to be purchased and requires both Rebirth and Afterbirth. The expansion will be available for Windows, OSX, and Linux (and possibly Xbox One & Playstation 4). However, the mod support will only be available for Windows.

## April 19 Update (Update #3)

The DLC will feature over 55 new items (including trinkets), a new final chapter, final boss, and a new ending, a new playable character, a Hard Mode extension to Greed Mode, daily challenges for Greed Mode, 5 new challenges, "loads" of new achievements, new bosses, and several other minor changes.

## June 6 Update (Update #4)

The new character has been revealed to be Apollyon. He starts with 2 hearts, slightly lower stats than Isaac, and his starting item is Void, a usable item with a recharge time of 4.

## July 27 Update (Update #5)

The effect of  was revealed. An additional item, , was revealed.

## August 29 Update (Update #6)

A new music track, Flux, was revealed. Two trinkets,  and , were also revealed.

## September 12 Update (Update #7)

Four new items (, , , and ) were revealed.

## October 24 Update (Update #8)

Three new items (, , and ) were revealed. Additionally, two bosses introduced in Afterbirth will be receiving evolved versions.

## November 15 Update (Update #9)

A new idea that will be implemented into Afterbirth† was announced: Every month, the best fan-made mod (card, enemy, boss, etc.) will be handpicked by Edmund McMillen and fully implemented in the game as a mini-update. Furthermore, a new enemy was unveiled: Stoney, an alternative to the Fatty that slowly walks toward Isaac, is invincible, and dies when there are no more enemies in the room.

## November 28 Update (Update #10)

Two new items ( and ) were revealed. Additionally, two mod samples were shown.

## December 9 Update (Update #11)

The release date, price, and features of the expansion were revealed.
The Wretched

Double Trouble

Degraded Boss

**The Wretched** is a boss that can appear in the Catacombs.

## Behavior

The Wretched's behavior is similar to Widow's: making large leaps towards Isaac, and can perform the following attacks after landing:

* Leaves a puddle of White Creep that is slightly larger than Widow's, and shoots 8 white projectiles outwards.
* Spits out 2 Spiders, a Big Spider, or a Trite.
	+ The Wretched can kill her own summons if she jumps on top of them.
* Spawns 3 Spiders upon death.

## Gallery

* The Wretched in-game.
* The Wretched as one of  Delirium's forms.

## Trivia

* The Wretched was added in the *Wrath of the Lamb* DLC for the original *The Binding of Isaac*.
* She is the posthumous version of Widow.
* The word Wretched means to be in an unfortunate state, which may refer to The Wretched's stitched upper mouth, and multiple bumps on her face.
* Widow's and Wretched's animations and behavior have been sped up to more closely resemble their Flash counterparts.
Tammy's Head

**Tammy's Head** is an activated item.

## Effects

* Shoots 10 tears in a circle around Isaac.
* The tears retain the range, shot speed, and special effects (such as poison) of Isaac's tears.
* Each tear will do Isaac's current damage and a flat +25 damage bonus on top.

## Synergies

* Azazel / : Isaac will fire Brimstone lasers in all directions.  Each laser is given bonus damage.
	+ This will deal a substantial amount of damage near the center of the effect due to how lasers overlap the closer you get to Isaac.
* : Spawns pale wisps in the outer ring. The wisps' tears deal 1.5 damage, but fire twice as fast as standard wisps. Tears are inaccurate and fire in a spread.
* : Shoots 20 tears in a circle around Isaac.
* : The size and damage of tears shot depends on how far Chocolate Milk is charged.
* Tainted Azazel: Although Tainted Azazel's Brimstone beams do not have a damage bonus, they also do not have the normal damage penalty and still deal double damage to enemies that have been sneezed on.

## Interactions

* / : Tears are replaced by bombs or exploding shots, which may result in self-damage.
* : Fires only normal tears.
* : The tears quickly lose their outward momentum and can now be controlled all at once, making it easy to make the tears hit enemies.
* : The tears are replaced with knives that deal double Isaac's damage, but move very quickly, have a small hitbox, and don't return to Isaac.
* : Trisagion blasts, like Brimstone beams, do not get a damage bonus.

## Unlockable Achievements

* The Parasite - Pick up any 2 of the following items in a single run: , , , and  ( Any 2 items that have the 'dead' item tag).

## Gallery

* 3DS The Icon of Tammy's Head as seen on the lower 3DS screen.

## Trivia

* Tammy's Head is named after one of Edmund McMillen's cats.
* When Repentance released, this item was removed from Golden Chests, but it wasn't added into any other item pool besides the  Crane Game, effectively making it impossible to find normally. This was later rectified.
Status Effects

This article is about effects which can be inflicted on monsters. For the different kinds of effects which Isaac's primary weapon can have, see Tear Effects.
**Status effects** are special effects that can be inflicted on an enemy from a variety of sources, such as tears, bombs, and items. Each status effect has a color and symbol/effect associated with them for easy identification. These colorations are not to be confused with champions.

## Effects

### Notes

* Host-type enemies will take burn and poison damage even if their skull is down, and all status effects can be applied by tears even if their skulls are down.
	+ If a Host-type enemy is petrified, they will take damage regardless of if they are vulnerable or not.
* After a boss or mini-boss had a status effect applied on them, they will receive immunity against all status effects for 8 seconds. This means that no other status effect can be applied to that enemy during this period.
	+ The slow effect is an exception to this rule.

## Burn

### Trinkets that cause burning

#### Other sources that burn enemies

* Judas'  effect will inflict Burn on nearby enemies when using an active item.
* When playing as Tainted Jacob, Dark Esau inflicts Burn on enemies he passes through whilst dashing.

## Charm

### Pills that cause charming

#### Notes

* First stage of Ball of Bandages cannot charm enemies. See  for details.
* Charmed enemies will still target Isaac if they are the only enemy in the room.

## Petrification

### Activated items that petrify enemies

 The Boomerang | 5.100.338
 Mega Bean | 5.100.351

### Trinkets that petrify enemies

#### Other sources that petrify enemies

* Losing a Gold Heart briefly turns all nearby enemies into gold.

## Poison

### Activated items that poison enemies

 The Bean | 5.100.111
 Mega Bean | 5.100.351

### Trinkets that poison enemies

 Black Tooth | 5.350.95
 Locust of Pestilence | 5.350.114
 Torn Card | 5.350.157

## Slow

### Pills that slow enemies

 Slows all enemies, Isaac, and the background music for the duration of the room.

### Notes

* The creep from items like  and  only slow enemies for as long as they remain in the creep.
* The Mask + Heart enemy is not affected by the slow effect.
* Stop Watch's slowdown effect is classified as a separate effect from the slow status and fully stacks with the status. See  for more details.

## Frozen

### Passive items that freeze enemies

 Freezer Baby | 5.100.608
 Uranus | 5.100.596

## Random

These items inflict random status effects on enemies.

### Passive items that inflict random effects

#### Other sources that inflict random effects

* The Spider Baby transformation creates a spider familiar that applies random status effects to enemies that come in contact with it.
The Sad Onion

This article is about **The Sad Onion**, not to be confused with Dead Onion.
**The Sad Onion** is a passive item.

## Interactions

* : The Sad Onion disappears upon being rerolled, as its internal ID number is 1.

## Trivia

* The Sad Onion was the first item designed by Edmund for the original game *The Binding of Isaac*, which is probably why it has the item ID 1.
* The item's effect is a reference to the fact that when onions are cut, they tend to make people involuntarily cry.
Tough Love

**Tough Love** is a passive item.

## Effects

* Adds a chance to shoot a tooth instead of a tear, which deals x3.2 Isaac's damage.

## Notes

* The chance to fire a tooth depends on the luck stat, and the formula used to determine the chance is:

1

10
−

⌊

L
u
c
k

⌋

{\displaystyle \frac1 { 10 - \left \lfloor \mathit{Luck} \right \rfloor}}

	+ At base luck (0), the chance is 10%, maxing out at 100% at 9 luck.

## Interactions

* : With 14 Luck, overrides Tough Love. With 13 Luck, Apple and Tough Love each have about an equal chance to trigger.
* : Overridden by Brimstone.
	+ Occasionally fires Brimstone beam with damage multiplier of Tough Love.
* / : Teeth will split into smaller teeth.
* : Bombs explode with the increased blast damage and radius of .
	+ Adds a chance for the bombs to deal increased damage. See the page for the specific damage formula.
* : Adds a flaming effect to the teeth,  but without the chance of exploding.
* : Teeth explode with the increased blast damage of .
* : Overridden by Mom's Knife.
	+ : Both damage multipliers apply, combined damage multiplier is x6.4.
* : Tears will not appear as teeth but may still gain the damage multiplier.
* : Activation rates are individually applied to each tear, effectively allowing for higher amounts of teeth. At 9 Luck, the trinket is no longer needed, as Tough Love will already guarantee that every shot is a tooth.
* : Tear occasionally flicks to being a tooth, which deals 3.2x Isaac's tear damage, before immediately returning to being a normal tear. The frequency at which the tear very briefly transforms into a tooth increases with Luck, permanently becoming a tooth at 9 Luck.
* : Split tears will not turn into teeth.
* : Both the sword and projectiles can deal increased damage.
* : Damage multiplier applies occasionally.

## Trivia

The x3.2 damage multiplier is likely a reference to the fact that full set of adult teeth amounts to 32 teeth in total.

## References

1. ↑ Binding of Isaac Item Trigger Testing
The Hourglass

This article is about the normal hourglass. For the glowing version of this item, see Glowing Hourglass.
**The Hourglass** is an activated item.

## Effects

* All enemies in the room are slowed for 8 seconds.

## Synergies

* : Spawns hourglass-shaped wisps on the middle ring. The wisps slow all enemies in the room for 3 seconds when destroyed. If the Hourglass is used or extra wisps are destroyed while the slow is in effect, its duration is extended.
* : Doubles the duration of the effect.

## Gallery

* 3DS The icon of The Hourglass as seen on the lower 3DS screen.
* Splash image which appears when The Hourglass is activated.

## Trivia

* One of Death's attacks invokes The Hourglass, slowing down Isaac for a short duration. The same popup appears as well.
The Shell

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

## Behavior

The Shell always spawns in a pair consisting of 4 body segments and a head segment each. They are always fought in a double-sized room.

* Flies around the room diagonally, bouncing off of walls while dealing contact damage; behaving identically to The Hollow.
	+ Unlike the Hollow, however, if Isaac is close to the vicinity of its head, it veers slightly in Isaac's direction.
* Normally invincible, but bombs and explosives can destroy its bony exterior (after 15 damage per segment), making its segments vulnerable. There are always one or two Bomb Grimaces that dispense Throwable Bombs for Isaac to use against The Shell.
* When the armor on their body is destroyed, the exposed flesh segments lose the ability to fly, and will spawn Fly Bombs if the segment is at the very end, or shoot a volley of three shots at Isaac if the segment is in the middle.
	+ The Shell moves slower if there are exposed flesh segments attached to its head.
* If a group of conjoined flesh segments have been detached from the head, they chase directly after Isaac at a very slow pace and continue to attack normally.
	+ If a single flesh segment has been completely detached, it becomes stationary but continues to spawn Fly Bombs.
* The Shell cannot split into smaller copies; when split down the middle, the side containing 3 segments with at least one of end segments having armor turns into a new copy of the boss with one of the armored body segments turning into a head segment.
	+ Flesh body segments on the shorter side detach and behave normally but armored body segments are automatically destroyed.
* The Shell's head cannot be damaged or destroyed and dies once it loses all its segments.

## Gallery

* The Shell in-game.
* Body segment without armor.
* Tail segment without armor.

## Notes

* can destroy the The Shell's armor, along with any items that create rock waves like  and .
* explosions cannot destroy their armor, nor can  tears.

## Trivia

* They appear to be a bony variation of The Hollow.
* They appear to be the posthumous version of the Tuff Twins. This makes them one of four boss pairs to have their regular and posthumous version in the same chapter, the others being Gemini having Blighted Ovum in Chapter 1, Chub having Carrion Queen in Chapter 2 and Polycephalus having The Stain in Chapter 2.
The Black Bean

**The Black Bean** is a passive item.

## Effects

* When taking damage, Isaac farts, applying poison to all enemies in range.
* When taking damage, Isaac farts 5 times in quick succession. The farts poison and knock back enemies and projectiles, and leave lingering poison clouds. Deflected projectiles deal 7 damage.
* Farts deal 5 damage and the poison deals 21 damage over time.
* Farts deal 5 damage and the poison deals Isaac's tear damage for 6 ticks.

## Synergies

* /: Shoots a flame behind Isaac when he farts.

## Interactions

* : The poison duration is not increased.

## Trivia

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

Degraded Boss

**The Frail** 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 Catacombs and the Flooded Caves.

## Behavior

### Phase 1

The Frail in its first phase has 100 HP like Pin and behaves identically, with the only difference that The Frail is less accurate in its jumps and generally overshoots or undershoots Isaac.

### Phase 2

Upon its HP being depleted, The Frail's appearance becomes skeletal. It now has 200 HP and performs the following attacks:

* Jumps out of the ground towards Isaac, firing 4 diagonal projectiles from the last section of its body that each split into 4 more projectiles in either cardinal or diagonal directions.
	+ Whether it fires projectiles depends on the length of its jump: does not fire projectiles on short jumps, fires projectiles shortly upon exiting the jump on regular/medium jumps, and fires projectiles both shortly upon exiting and after a few moments airborne on long jumps.
* Partially emerges head-first and:
	+ Fires a  laser at Isaac, rotating to follow his movements.
	+ Fires a quick, non-moving  laser at Isaac 2 times before stopping.
	+ After performing any of these attacks, The Frail will always jump out of the same spot it entered.
* Partially emerges tail-first and fires a burst of white projectiles in all directions which leave small puddles of slowing White Creep where they land.
	+ After performing this attack, The Frail will always jump or appear head-first out of the same spot it entered.

## Champion Versions

 **Black**: Starts in its second phase, with only 66.6% HP (200) total.
## Gallery

* The Frail in-game.
* The Frail in its second phase.
* The Frail's tail in its second phase.
* The Black Champion Frail.
* The Black Champion Frail's tail.
* The Frail as one of  Delirium's forms.

## Trivia

* It is the posthumous version of Pin.
* Despite The Frail being an invertebrate, or an animal lacking a skeleton of bones, its second phase is skeletal.
* The definition of the word frail is weak and delicate, which explains its rotting body and depressed look in The Frail's first phase.
* The main body of The Frail's battle sprite is heavily based on Larry Jr.'s battle sprite.
* The Black Champion's behavior of starting from the second phase might be a bug since this version of the boss is set to have 30% more HP (260) in its first phase. Spawning the black champion via the Debug Console displays a glimpse of the boss in its first phase, before being instantly replaced with the second phase, ignoring the amount of HP set in the game files.
* The Frail can be found in The Void, even before being unlocked.
* It is the boss version of the  Pasties.
	+ Even if it is the boss version of Pasties, it precedes their addition.