recursal/Fanatic-Fandom huggingface dataset:
Immaculate Conception

### Collection Grid

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

### Unlock Method

 Complete the Boss Rush as  Lilith

**Immaculate Conception** is an unlockable passive item added in *The Binding of Isaac: Afterbirth*.

## Effects

* Upon picking up 15 heart pickups, Isaac gains a permanent angelic familiar and generates a Soul Heart drop. Possible familiars include:
* All five familiars will spawn in a random order.
* Isaac will look progressively more pregnant as he collects heart pickups.
* The familiars spawned by Immaculate Conception will not contribute to transformations, such as Conjoined, nor do they count towards the collection page.

## Notes

* After all five familiars have been spawned, a Soul Heart will still drop every 15 hearts collected.
* All types of hearts except Gold Hearts and  Blended Hearts count.
* Items that directly add health such as , , , and  do not count towards spawning a familiar.
* The Lost can pick up Soul Hearts and Black Hearts despite having no health and thus can activate Immaculate Conception.
* Keeper cannot encounter hearts, thus the item is useless for him.
* As the short-lived Half Red Hearts dropped by  Tainted Magdalene also count, it is an excellent choice for her since she will constantly be picking up hearts and gain all five familiars quickly.
* Familiars spawned by the item do not affect item pools, so multiple copies of one familiar can be obtained. For example, a second Seraphim can be purchased after Immaculate Conception spawns one.

## Interactions

* : By intentionally taking damage with something like a fire and grabbing the half-red hearts, Isaac can easily generate powerful familiars for free.
* : Hearts collected in the jar do not count towards activation.

## Trivia

* This item is the angelic counterpart to .
* Immaculate Conception refers to the Catholic teaching that the conception of the Virgin Mary was free from original sin.
Monstro

Double Trouble

(With Another Monstro,  The Duke of Flies, Larry Jr. or Fistula)
Degraded Boss

This article is about the boss. For the posthumous version, see Monstro II. For the enemy, see Ministro. For the item, see Lil Monstro.
**Monstro** is a boss that can appear in the Basement and the Burning Basement.

## Behavior

* Hops towards Isaac.
* Coughs up a large number of disorganized projectiles towards Isaac.
* Jumps off-screen, aiming to land on top of Isaac. Create a burst of disorganized projectiles in all directions on landing.

## Champion Versions

**Grey**: 15% larger and has 25% more HP (312.5). Uses projectile volleys much more often and is unable to jump off-screen.
**Red**: Two 20% smaller Monstros, each with 55% less HP than the original one (112.5), replace the normal Monstro.
## Gallery

* Monstro ingame.
* Grey Champion Monstro.
* Red Champion Monstro.
* Monstro as one of  Delirium's forms.

## Arena

Note: Layouts 1 and 11 are identical.
 Layouts 4, 8, and 9 no longer appear, as small boss rooms and boss rooms with two or fewer doors have been disabled.

## Notes

* In the boss room, Monstro can be paired with Flies, Attack Flies, Gapers, Hoppers, Frowning Gapers, Mulligans,  Cyclopias, or  Ministros.
* When Monstro jumps off-screen, he is cured of all status effects.
* Monstro can't hop over Obstacles.
	+ If Isaac is somewhere that Monstro cannot reach, Monstro will jump in place.
	+ If Isaac has flight and is over an obstacle, Monstro will essentially be unable to perform any attacks.
		- While Monstro can hit Isaac with his tear barrage because of its tear height, it is very unlikely.
* Monstro can rarely spawn in a room with two Blood Donation Machines.

## Trivia

* Monstro appeared in the original *The Binding of Isaac.*
* He is the boss version of the  Ministros.
* Monstro appears to be missing a tooth which happens to be an item.
	+ Monstro also has a cleft lip.
* Monstro is *Monster* in Portuguese.
	+ "Monstro" is a somewhat common mispronunciation of the Spanish word *monstruo*.
	+ Monstro is also the name of The Terrible Dogfish, a fish with a large mouth and many teeth from the book *The Adventures of Pinocchio*.
Punching Bag

### Collection Grid

*(page 3, column 6, row 8)**(page 3, column 16, row 2)**(page 3, column 17, row 2)*

**Punching Bag** is a passive item.

## Effects

* Spawns a Mulligan familiar that walks around the room and acts as a decoy for monsters.
* If the monsters are closer to the decoy than Isaac, they will attack the decoy.
* Homing shots from enemies will always be attracted to the decoy if they are closer to it than Isaac.
* Punching Bag will also block enemy shots.
* Punching Bag will die after taking too much damage and eventually respawn after a long time. Exiting and continuing the run will cause it to reappear right away.
	+ Punching Bag will reappear instantly each time a familiar or orbital item is picked up.

## Notes

* The Punching Bag will be targeted by enemies if it is closer to them than Isaac, for up to 6 seconds. Then they will target Isaac for 6 seconds regardless of distance, before acknowledging the Punching Bag again.
* The Punching Bag will die instantly by enemies' beam-type attacks, such as  or by Uriel's and Gabriel's beam. This also includes enemies'  lasers such as Eye and Camillo Jr.

## Interactions

* : Adds another Punching Bag. This may cause enemies to become unpredictable, so use with caution.
	+ If the Punching Bag has died, it can be forced to respawn with a double upon using the Box of Friends.

## Trivia

* This item is used in  The Guardian (challenge #30).
* A punching bag, used in this context, is a target of frequent criticism and abuse.
* The term "scape goat" in the pickup quote means someone who is blamed for problems that were caused by another person, or being treated like a punching bag.
Lemegeton

**Lemegeton** is an unlockable activated item added in *The Binding of Isaac: Repentance*.

## Effects

* Upon use, Lemegeton will grant a random passive item as an orbital familiar. The item summoned has a 25% chance to be from the current room's Item Pool, or from a random item pool otherwise. The item must have the '`summonable`' item tag in order to be generated.
	+ These familiars can block up to 4 shots and/or get hit by 2 explosions before being destroyed. When the familiar is destroyed, the item it granted is lost.
		- If Isaac is shielded or invulnerable, his familiars are also immune to damage.
	+ Familiars also deal contact damage to enemies equal to 2x Isaac's damage per tick (4x Isaac's damage per second). They do take contact damage.
	+ Isaac can have up to 26 familiars: an inner counterclockwise ring of 6, a middle clockwise ring with 8, and an outer counterclockwise ring of 12.
		- Using Lemegeton while Isaac already has 26 causes the oldest one to be replaced.
* This item belongs to the  set. Collecting three items from this set will transform Isaac into Bookworm.

## Notes

* Tainted Bethany starts with this item in the consumable slot.
	+ When playing as Tainted Bethany, picking up  will cause Lemegeton to no longer gain charges as long as her normal active item has empty charges.
* Items given by Lemegeton are separate from the normal item pools and Isaac's current collection of items. This has the following effects:
	+ Isaac can still normally find items that were previously summoned by Lemegeton.
	+ Isaac can have multiple wisps of the same item.
	+ Wisps cannot be rerolled by  or the  / .
	+ Wisps do not count towards transformations.
	+ Summoned items do not count towards the Collection Page.
* Items that would normally add or remove hearts/consumables (such as , ,  etc.) do not do so if given by Lemegeton.
* Summoning a  wisp grants  Tainted Lost infinite lives until the wisp is destroyed.
* Being invincible prevents Lemegeton wisps from being destroyed.
* The maximum amount of wisp available at one time is 26.

## Synergies

* : Doubles the damage of Wisps.
* : Lets Lemegeton's wisps shoot homing tears once per second that deal 3 damage.
	+ Also applies to  Tainted Bethany's Lemegeton, despite not being visually shown.
* : Stat increases remain even after its wisp has been destroyed.
* : Using Lemegeton in a Boss Room after activating the Satanic Bible on that floor will pull from the Devil Room item pool, even if the boss wouldn't normally drop an item after defeat.

## Interactions

* : Does not double the wisps spawned by .
* : Item wisps will be selected from random pools, regardless of the room Isaac is in.
* : Can be spawned by Lemegeton if it has been used in the current run.
* : Generated wisps are affected by Sacred Orb.
* : Every wisp will be converted to a Half Soul Heart. Familiars created by Lemegeton are sacrificed normally.

## Trivia

* The Lemegeton is another name for the Lesser Key of Solomon, an anonymous grimoire focused on demonology that was compiled in the 17th century.
Monstrance

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

## Effects

* Gives Isaac a large pulsing aura around him that deals damage to enemies inside of it.
	+ The aura deals more damage the closer enemies are to Isaac, ranging from `0.4` on the edge up to `3.9 + 0.3 * floor` damage.
	+ The aura deals damage up to 7.5 times per second.

## Synergies

* : Enemies won't target Isaac, thus he can safely damage enemies while standing near them. However, this won't work with bosses.
* : Monstrance becomes much safer to use offensively as Isaac's body no longer takes damage.
* Items granting invulnerability or a shield: Monstrance damages enemies while Isaac is invincible.
	+ This includes  /  allowing Isaac to clear most rooms without moving.
	+ : Enemies will still be damaged while Dark Arts' effect is active, allowing Isaac to safely deal damage while invulnerable in this way.
* : Monstrance will not stop the pause effect allowing Isaac to kill or chip bosses easily by standing near them for the duration of the pause effect.
* Tainted Forgotten: The aura surrounds Tainted Forgotten allowing  Tainted Soul to damage enemies from a safe distance.

## Trivia

* Monstrance is from the *Antibirth* mod. In *Antibirth*, Monstrance would also increase Soul Heart drop chances.
* A monstrance is a vessel used in many Christian practices to display another religious artifact such as the Eucharist. In other words, it is generally used as a display piece.
Old Bandage

**Old Bandage** is a passive item.

## Effects

* Grants an empty Red Heart container.
	+ If the character cannot hold red heart containers they will simply be given a normal HP up.
* Adds a chance of dropping a Red Heart after taking damage.

## Notes

* The chance for Old Bandage to spawn a Red Heart depends on the luck stat, and the formula used to determine the chance is:

min
(

1

10
−

⌊

L
u
c
k

∗
0.3

⌋

,
50
%
)

{\displaystyle \min(\frac1 { 10 - \left \lfloor \mathit{Luck} \* 0.3 \right \rfloor},50\%)}

	+ At base luck (0), the chance is 10%, maxing out at 50% at 26.67 luck.
* The chance for Old Bandage to spawn a Red Heart depends on the luck stat and is based on this formula:

20
%
(

L
u
c
k

∗
1
%
)

{\displaystyle 20\% + (\mathit{Luck}\ \* 1\%)}

	+ This means that the chance starts at 20% at 0 luck, minimizes at 0% at -20 luck, and maximizes at 100% at 80 luck.

## Synergies

* : For each half heart damaged by Blood Oath, Old Bandage has a chance to drop a heart. Synergy further improves with luck.
Mystery Egg

**Mystery Egg** is an unlockable passive item added in *The Binding of Isaac: Afterbirth † (Booster Pack #5)*.

## Effect

* Spawns an egg familiar, which cracks and turns into a random friendly enemy when Isaac is hurt.
	+ The egg regenerates upon entering a different room.

## Notes

* The usefulness of the enemy depends on how many rooms have been cleared without getting hurt.
	+ For Greed Mode and Greedier Mode, the usefulness of the enemy is based on waves cleared rather than rooms.
* Familiars that follow behind Isaac have a certain priority in how close their position is to him over other familiars, with Mystery Egg having the lowest priority at 6th and thus being farther from Isaac than familiars of different priorities.
* The list of available monsters is as

follows:

## Synergies

* : The enemy spawned will be a champion variant and egg grows in size.
	+ Even if the enemy spawned cannot be a champion under normal circumstances, they will become a champion.

## Interactions

* Ace Cards: Friendly monsters are still affected by Ace Cards.
* : Either angry version of Blood Puppy will target friendly enemies as well and can drag them along with it when it charges them. Blood Puppy cannot damage friendly enemies however friendly enemies can damage Blood Puppy despite not targeting it outright.
* : Broken Modem also affects friendly enemies and projectiles created by them.
* : Enemies erased by Eraser will never show up again, hindering Mystery Egg should it spawn said removed enemy.
* /  /  / : Explosions from ghosts can kill friendly enemies.
* : Each use of Glowing Hourglass that does not move Isaac to a different room than the one he is currently in (such as the starting room of a new floor) will duplicate friendly enemies. (This is possibly a bug)
* : Losing the Mantle will not cause a friendly enemy to spawn.
* : Friendly enemies start with less health if they have 60HP or higher.

## Trivia

* Mystery Egg is based on this Steam Workshop item by Strawrat and Aczom.

## Gallery

* Mystery Egg's appearance in the original steam workshop mod.
* Mystery Egg's familiar appearance.
Polished Bone

**Polished Bone** is an unlockable trinket added in *The Binding of Isaac: Repentance*.

## Effects

* After clearing a room, adds a chance to spawn a friendly Bony.
	+ The chance can be increased, if multiple Polished Bones are held, e.g. from absorbing using , holding , having a golden Polished Bone, or other methods.

## Interactions

* Ace Cards: Friendly monsters are still affected by Ace Cards.
* : Either angry version of Blood Puppy will target friendly enemies as well and can drag them along with it when it charges them. Blood Puppy cannot damage friendly enemies however friendly enemies can damage Blood Puppy despite not targeting it outright.
* : Broken Modem also affects friendly enemies and projectiles created by them.
* : Bonies erased by Eraser will never spawn again, greatly diminishing the value of Polished Bone. If Black Bonies are also erased, Polished Bone becomes useless.
* /  /  / : Explosions from ghosts can kill friendly enemies.
* : Each use of Glowing Hourglass that does not move Isaac to a different room than the one he is currently in (such as the starting room of a new floor) will duplicate friendly enemies. (This is possibly a bug)

## Trivia

* The namesake of this item most likely comes from the fact that "polishing one's bone" is sexual innuendo for male masturbation.
	+ This is furthered by the fact that the item has a rather phallic shape and nature to it.
Pisces

### Collection Grid

*(page 4, column 4, row 1)**(page 3, column 4, row 4)**(page 3, column 5, row 4)*

**Pisces** is a passive item.

## Effects

* Increases tear knockback.
	+ If the player has piercing tears, the knockback effect is reduced.
* Tear size multiplier: 1.25x.
	+ +0.12 tear size.
* -1 tear delay (increased rate of fire)
	+ Since this directly affects tear delay instead of changing the tears stat, it allows Isaac's rate of fire to go over the normal maximum rate.
	+ Tear delay decreases are more noticeable and are a greater increase to DPS when the tears stat is high.
* +0.5 fire rate.

## Interactions

* : Overrides Pisces.
* : The beam gains knockback.
* ///: Tears gain knockback.
* //: Explosions also gain increased knockback.
* : The knife gains knockback.
* //: The lasers gain knockback.
	+ Technology 2's constant laser has such strong knockback, it can pin enemies to walls.
* : Adds knockback to blasts, which can not only significantly repel enemies when used correctly, it can deal a high amount of damage to enemies unable to escape the knockback.

## Trivia

* This item, like the other Zodiac items, is a reference to Zodiac signs.
* Isaac appears to be covered in scales, a reference to Pisces being represented by twin fish.
* Edmund McMillen is a pisces.
Poke Go

**Poke Go** is a passive item added in *The Binding of Isaac: Afterbirth †*.

## Effect

* Adds a 20% chance to spawn a friendly enemy upon entering a room with enemies in it. The following enemies can spawn from Poke Go:
	+ Attack Fly
	+ Fat Bat
	+ Frowning Gaper
	+ One Tooth
	+ Pooter
	+ Vis

## Notes

* The effect is not activated upon entering the main room of Greed Mode, neither when fighting the waves, making it nearly useless.
* Multiple friendly enemies can spawn at the same time.
* For enemies that spawn other enemies, the spawned enemies will also be friendly.
* Enemy variants may spawn.

## Interactions

* Ace Cards: Friendly monsters are still affected by Ace Cards.
* : Either angry version of Blood Puppy will target friendly enemies as well and can drag them along with it when it charges them. Blood Puppy cannot damage friendly enemies however friendly enemies can damage Blood Puppy despite not targeting it outright.
* : Broken Modem also affects friendly enemies and projectiles created by them.
* : Enemies erased via Eraser will never spawn again. This can be a detriment if Vises are erased, as it greatly reduces the usefulness of Poke Go.
* /  /  / : Explosions from ghosts can kill friendly enemies.

## Trivia

* The item is a reference to *Pokémon GO*: an augmented reality mobile game in which Pokémon are generated around the player as they walk around in real life.
	+ The pickup quote is a shortened version of "Gotta catch 'em all!", one of the series' marketing slogans.
	+ "A charmed (enemy) appears!" is a reference to the phrase "A wild Pokémon appears!" from the games.
* Poke Go was originally an unofficial item which was supposed to showcase the modding capabilities of Afterbirth+ in the PAX 2016 livestream. However, all items included in the demo were later added to the final game.
* Since Poke Go is simply part of Isaac's imagination, Edmund McMillen confirmed that Isaac therefore technically knew about Pokémon Go.
NPCs

**NPCs** are characters in the The Binding of Isaac: Rebirth which are not directly controlled by Isaac or his co-op partner. Major NPCs include characters within Isaac's thoughts, antagonists, friendly characters, characters who provide a service, and deceased, inanimate characters in the environment.

## Characters Within Isaac's Thoughts

The story of the game provides two insights into Isaac's mind. Most evidently, he has recurring thoughts or memories of persons in life who cause him distress. The player is shown vignettes of moments where Isaac dwells on acts of ridicule or neglect from his peers. These characters include various children and Isaac's own mother.
Additionally, the game provides moments in the introduction and endings which indicate that not all things are as they seem. The player can be led to suspect that all or part of the game takes place within Isaac's head.

## Antagonists

The premier antagonists presented by the series are God and Isaac's mother. Through a trapdoor under his bedroom, Isaac will find danger at every turn. Other dangerous parties include bugs, undead, spirits, deformed children, and major foes (e.g. incarnations of The Seven Deadly Sins, The Four Horsemen of the Apocalypse, and Isaac himself).

*For a full list of common creatures encountered through the trapdoor, see Monsters.*
*For a list of major foes, see Bosses.*
## Familiars

Familiars are non-playable characters and creatures in the game that serve to follow Isaac from room to room; at times, assisting him to survive or dispatch enemies by various means.

*For a full list of Isaac's friends, see Familiar.*
## Services

Throughout Isaac's basement and beyond, some characters will interact with Isaac by way of exchanging resources. Isaac can choose to give them some portion of his health, money, or keys. Afterward, he may receive something in return.

*For the usual list of services, see Beggar.*
*For more difficult choices, see Devil Room.*
*For something for nothing, see Angel Room.*
## Deceased Residents

In shops, arcades, and hidden areas, there is a possibility of encountering deceased, former residents who have left behind their remains. The corpse can be destroyed by stomping on it or via explosion for a chance to find pickups, trinkets, or spiders. One other area exists where Isaac will find a unique individual.
Mr. Maw

### Found In

**Mr. Maw** walks towards Isaac and when in range it will launch its head towards him. It appears to be a Maw attached to a Gusher and will turn into either upon death depending on the killed body segment. It can also randomly separate at will into a Gusher and a Maw.

## Variations

### Stage HP

 25
 0

### Found In

Chance to replace Mr. Maws

**Mr. Red Maw** behaves similarly to Mr. Maw, but moves quicker and has a Red Maw as its head instead of a regular Maw. If the Red Maw segment is killed first, it will release four shots in the cardinal directions like a regular Red Maw. It can also occasionally separate at will.

### Stage HP

 20
 0

### Found In

**Mr. Mines** are chained to pits and will attempt to launch themselves at Isaac if he comes near. They will occasionally burrow and pop up in another pit, often near Isaac. Upon death, they fire six shots in all directions.

Since pits have a chance to replace rocks in the Flooded Caves where Mr. Mine resides, this can give them more tiles to utilize.

### Stage HP

 38
 0

### Found In

**Swingers** behave differently to its variants as rather than firing its head, the Swinger's head is constantly detached and spins around its base clockwise in a fixed radius, while slowly sliding towards Isaac. The cord connecting the head and body of a Swinger isn't solid and does not deal damage. If the base is killed, the spinning head turns into a Maw, and if the head is killed, the base turns into a Globin in its goo form which then can reform into a Globin.

When entering a room, their heads will be retracted and slowly rotate outwards until they reach max length.  Since Booster Pack #5, Swingers extend their heads at a much slower pace, making it easier to avoid damage.

## Gallery

* Sketches of monsters for the Binding of Isaac: Rebirth, including the Swinger in the third square of the third row, formerly known as "Chain Dudes." Interestingly enough, the Swinger in this concept design is a Maw attached to a Pacer instead of a Globin in its goo form.
* Concept art for Mr. Mine by LeatherIceCream.

## Trivia

* Mr. Mine and Mr. Red Maw were added in Booster Pack #5.
* Though the Maw appears to have eyes when attached to the Globin, if the Maw survives and spawns upon the Swinger's death, then it will have empty eye sockets.
* Mr. Maw makes Gaper noises while chasing Isaac, while Mr. Red Maw makes the Maw noise only if the Red Maw segment dies first.
* Mr. Mine is based on the enemy Crunch from The End is Nigh.
* Mr. Mine may be named after the Pokemon "Mr. Mime."
Mr. Mega

**Mr. Mega** is an unlockable passive item.

## Effects

* Grants 5 Bombs.
* Gives all of Isaac's bombs increased damage and blast radius.
	+ Mr. Mega bombs deal 110 damage instead of 60.
	+ Mr. Mega bombs deal 185 damage instead of 100.
* When bombs explode, the screen will shake.

## Notes

* This item can drop from Super Wrath.
	+ It is possible to acquire this item more than once by killing multiple Super Wraths on later floors; however, the bomb damage increase doesn't stack.

## Synergies

* : Increases damage  from 60 to 145  from 100 to 150.
* : Adds 25 flat damage to bomb explosions.
* : Ghosts appear larger and do extra damage only upon exploding.

## Interactions

* : No effect.
* /: Not affected by Mr. Mega.

## Trivia

* This item is used in Suicide King (challenge #7) and  Blue Bomber (challenge #23).
* The cosmetic effect that Mr. Mega gives to Isaac is similar to Wrath.
* Prior to *Repentance*, Mr. Mega’s description was “Blast Damage”.
Mysterious Paper

**Mysterious Paper** is an unlockable trinket.

## Effects

* On every frame, it has a random chance to grant the effect of one of the following items/trinkets:
	+ - Does not include +1 damage bonus.
* If Isaac does not already have the item/trinket, then he will be given the item (but only for that particular frame). This means that Isaac has a chance to go to Chest or the Dark Room without  or , he has a chance to revive as  The Lost upon death, and so forth.

## Notes

* In addition to regular trinket drop sources, Mysterious Paper is guaranteed to drop from , provided it has been unlocked.
* If the Missing Poster effect is activated, Mysterious Paper will not be removed.
* This trinket cannot be used to substitute  or  to open the strange door.
* The Black Heart damage bonus of  will work, provided a heart/item affected by it will trigger on the frame it's active.
* If it happens to grant , it can be used to unlock  The Lost and will act as an extra life for both the Lost and the  Tainted Lost
Mysterious Candy

**Mysterious Candy** is a trinket.

## Effects

* Isaac has a chance to fart or poop every 30 seconds.  Getting hit can also trigger the effect.
* Farts deal 6 damage and blow away projectiles.

## Notes

* With smart positioning, poops can be placed and bombed to create bridges for 1 tile gaps, allowing Isaac to reach otherwise unobtainable consumables.
* Isaac can poop as much as he wants without leaving the room, but he still cannot poop where a previous poop was placed or destroyed.

## Synergies

* Golden Trinket: Spawned poop is golden.
* : Poops may be used to access secret rooms and blow rocks and debris.
	+ + Yes Mother?: Not recommended. Poops will blow up as soon as they spawn.
	+ + : Provides a slow, but effective source of healing.
* /  : Poops are more likely to drop pickups, allowing to farm them over time.
* : Allows a steady supply of Dips, with time. Useful for later chapters.
* : Farts are affected, covering a wide area and dealing 10 damage instead.
* : Poops spawned by Mysterious Candy have a chance to be black poop.

## Interactions

* / : The spawned poops are not affected by these items.

## Trivia

* Mysterious Candy is a reference to Ex-Lax brand of laxative, where the active ingredient is contained in chocolate bars.
* This trinket is used in Scat Man (challenge #36).
Pointy Rib

**Pointy Rib** is an unlockable passive item added in *The Binding of Isaac: Afterbirth † (Booster Pack #5)*.

## Effects

* Spawns a bone familiar that can be aimed with the fire buttons in all directions and does contact damage.
	+ The familiar will continuously hover back and forth in the direction that it is pointing in.
* The damage is equal to Isaac's tear damage and is dealt 6 times per second.
	+ The damage increases when Isaac is moving on the direction the familiar is pointing in based on Isaac's current speed, up to twice of its base damage.
* The familiar will damage Poops and Fire Places.

## Synergies

* : Triples the contact damage. Has no penalty with range.

## Interactions

* : Doubles the base contact damage, but not the bonus damage granted from Isaac's movement.

## Trivia

* The item is possibly a reference to the Genesis story where God created Eve by removing a rib from Adam.

## Gallery

* Concept art for Pointy Rib (labeled as "Sharp Rib") on the right side, along with other Booster Pack items and trinkets, by Edmund McMillen.
Polty

**Polty** is an enemy added in *The Binding of Isaac: Repentance*.

Unlike normal enemies, Polties appear from inside Buckets or Urns in the current room. They then pick up the obstacle they were under, fly towards Isaac, and then throw it at him. For the rest of the room, it will fly around the room, stopping to pick up more rocks, props, poops, and other obstacles and throw them at Isaac. Thrown obstacles have the same chance to release pickups or enemies as if they had been destroyed normally. Once there are no more rocks to throw at Isaac, they will leave the room.

Polties prefer to pick up Buckets and TNT over normal rocks, with the exception of Metal Blocks and Spiked Rocks, which they cannot pick up. If there's a Tinted Rock, it will avoid picking it up until there's no other rocks left to throw. When it finally does pick it up, it will fly offscreen with it instead of throwing it at Isaac. If the Polty is killed before it successfully runs away with the rock, it will give its contents like normal.

Destroying the Bucket or Urn which a Polty is hiding beneath will cause it to spawn and then behave normally.

Once  Haunted Chests are unlocked, Polties may be encountered anywhere. After being spawned by approaching the chest, they grab it and throw it at Isaac, then act normally.

## Variants

### Stage HP

 45
 3

### Found In

**Kineti** is the Mausoleum variant of a Polty and behave similarly to their counterpart, with the exception that they use telekinesis to bring obstacles toward them rather than moving towards them and picking them up manually. The obstacles can damage Isaac while being pulled towards the Kineti.

**Kinetis** will prioritize picking up rocks that would hit Isaac while being pulled towards itself. They are also knocked back by the force of the rock they carry once it enters their hands. If there are no more obstacles for them to pick up, similar to Polties, they will exit the room. Similar to Polties, if and when it chooses to pick up a Tinted Rock, it will fly offscreen with it instead of throwing it at Isaac.

## Trivia

* The Polty first appeared in the *Antibirth* mod where it had 20 hp and 3 stage hp.
* "Polty" is a nickname of the word "poltergeist" as it behaves quite similarly to one. In lore, poltergeists are known to be "responsible for physical disturbances, such as loud noises and objects being moved or destroyed."
* "Kineti" is a shortened version of the word "kinetic," which describes the form of energy that an object possesses due to its motion.
Pandora's Box

### Collection Grid

*(page 3, column 2, row 10)**(page 3, column 12, row 3)**(page 3, column 13, row 3)*

### Unlock Method

 Defeat The Lamb as  Lazarus

**Pandora's Box** is an unlockable activated item.

## Effects

* Upon use, spawns specific pickups or items depending on the floor it is used on. Disappears after use.

## Notes

* Floors affected by Curse of the Labyrinth are counted as the first floor by Pandora's Box.
* When playing Greed Mode, the normal Devil Room item pool is still used in Sheol, instead of the Greed Mode Devil Room item pool.
* In Greed Mode, it will always generate its 2nd floor drops for each Chapter that is before the Womb, such as 20 pennies in the Depths, etc.
	+ The Womb is the exception, generating its 1st floor drop: 2 Boss Room items.

## Synergies

* +  as  Judas /  Dark Judas: In addition to the item's expected reward, spawns one of the following demonic familiars: , , , , , , , or .
* : Spawns `floor - 1` regular wisps with no unique effect, up to a maximum of 8. No wisps are spawned on the first floor.
* : Instead of its normal effect, Pandora's Box spawns six items from a set of item pools. Both items are consumed.
	+ This will prevent unlocking  if it hasn't already been unlocked, when used in Dark Room.

## Interactions

* : No effect.
* : Will consume both the card and Pandora's Box, but nothing will happen, wasting both of them.
	+ Will activate Pandora's Box without consuming it, allowing for multiple activations.
	+ If Isaac is holding , using the ? Card will consume the card and trinket, spawning 6 items, but Pandora's Box will not be consumed.

## Gallery

* The icon of Pandora's Box as seen on the lower 3DS screen.

## Trivia

* In Greek legend, *Pandora's Box* is a jar containing all of the evils of the world. It was given to the first woman created, who, in her curiosity, opened it, releasing every evil unto the land. Once the evils were released, the only thing that remained was Elpis, the Spirit of Hope.
* Pandora's Box, along with , is likely a reference to David Lynch's 2001 film *Mulholland Drive.*
* The rewards for Greed Mode changed in patch v1.06.J168; the rewards given in Caves are instead given in Basement, and so on.
* Despite Pandora’s Box’s sprite depicting a keylock, the item does not require a key to open.
* In the game files, 's sprite is named **Blue Box** while ' sprite is named **Pandora’s Box**.
Mutant Spider

**Mutant Spider** is a passive item.

## Effects

* Isaac fires 4 tears at the same time.
* Tears down: (Delay \* 2.1) + 3.
* Tears fired per second \* 0.42.
* This item belongs to the  set. Collecting three items from this set will transform Isaac into a humanoid spider.

## Notes

* Mutant Spider is a special item.
* The maximum number of tears per volley that can be reached by combining and/or duplicating , , Mutant Spider and  is 16, or 20 with the  Keeper.

## Synergies

* : When Isaac uses Abyss to absorb Mutant Spider it creates four locusts instead of one.
* : Shoots 4 beams at once, dealing massive damage.
* : Shoots 4 shots out of each eye, for a total of 16 tears when fully charged.
* /: Replaces the single missile strike with a barrage of four consecutive missiles.
* : Shoots 7 tears with no further decrease in fire rate.
	+ Shoots 5 tears with no further decrease in fire rate.
* : Fires 8 tears with no further decrease in fire rate.
	+ Each copy of the item adds +2 tears up to the maximum of 16.
* : Tear rate is not lowered further. Damage is increased by a flat +5 instead of normal Polyphemus boost.
* : All tears are fired along the beam.

## Interactions

* : Overridden by Mutant Spider.
	+ Shoots 6 tears.
	+ Removes the fire rate penalty while reducing damage to 80%. Additional copies will add one additional tear with no further change to damage/fire rate.
* Keeper: Fires 7 tears with significantly decreased fire rate.
	+ Fires 5 tears with significantly decreased fire rate.
* Tainted Keeper: Fires 6 tears with significantly decreased fire rate.
* : The tear gains 3 orbiting tears.
* : Only occasionally fires one tear in the other three directions.
* : No effect.
	+ Fires three shots out of each eye.
* : Adds 7 tears to the barrage with a significant decrease in fire rate.
* + : The four shots instantly fuse and burst.
* /  / : No effect.
* : Four shots are fired in each direction.
	+ : Three shots are fired in each direction.

## Trivia

* It might be a nod to Spiderman and the general trope of gaining superpowers by being bitten by a radiative animal.
* Numerous fans refer to this item by its quote instead of its true name.
Pyromaniac

This article is about the explosion immunity item. For the item that grants bombs, see Pyro.
**Pyromaniac** is a passive item.

## Effects

* +5 Bombs.
* All explosions heal Isaac instead of damaging him. If Isaac has no Red Heart containers or full health, no damage is taken.
	+ Explosions heal one full Red Heart.
	+ Explosions heal one half Red Heart.
* Grants immunity to damage from Fire Places or enemy fires, but does not heal Isaac.
	+ It does not protect the player from taking damage from fire projectiles or the White Fire Place in Downpour II.

## Notes

* Pyromaniac is a Special Item.
* Makes the player immune to Mom's, Satan's, and other enemies' stomp attacks, making those fights substantially less difficult.
	+ Due to the immunity to Mom's stomping attack,  has improved usefulness.
* Makes the player immune to The Cage's, The Adversary's, Mega Satan's, and  Ultra Greedier's rock wave attack.
* Makes the player immune to fires left behind by enemies and their hot bombs, as well as projectiles from Red Fire Places and Purple Fire Places, but **not** the fireplaces themselves.
* The item is unable to produce Soul Hearts, Black Hearts, or Eternal Hearts, making Pyromaniac a little less effective if used with  ???,  Dark Judas,   Tainted Judas,  The Lost,  Tainted Forgotten, or  Tainted Bethany. However, these characters still gain immunity to explosions, with  Tainted ??? benefiting the most out of all.
* Ultra Greedier uses explosive attacks almost exclusively. As a result, Pyromaniac makes characters nearly invulnerable against him except for his rock waves.
* Makes Isaac immune to the lake of fire in the fight against  The Beast, but not to her fire inhalation attack.
* One of only two items that grant full immunity to explosive damage, the other being .

## Synergies

* : If the player has run out of bombs, they can spend half a heart to drop a bomb and recover it by getting caught in the explosion (it won't work on characters that can't obtain red health).
	+ This allows Isaac to infinitely damage himself for items such as .
* : Heals Isaac multiple times per bomb depending on the number of explosions that hit him.
* : Whenever Isaac gets hit, numerous healing troll bombs fill the room, nullifying nearly any red heart damage taken.
* /  / : Explosions heal Isaac, essentially making him invincible as long as he has more than one red heart container and a decent rate of fire.
* : Provides an unlimited source of explosions which will heal.
* Tainted Magdalene: Explosions heal a full Red Heart again.
* : Walnut will only require 1-5 explosions to open. As Isaac is immune to explosions, he can safely open Walnut without taking any damage.

## Trivia

* This item is used in  Blue Bomber (challenge #23).
* Pyromania is an impulse control disorder in which individuals repeatedly fail to resist impulses to deliberately start fires.
Ring Worm

**Ring Worm** is a trinket.

## Effects

* Isaac's tears travel in a high-speed spiral pattern.
* Also grants +0.47 Tears and spectral tears.

## Notes

* The tear pattern slightly increases Isaac's effective range.
* The trinket has no effect on any non-tear based attack, such as  or .
	+ The trinket now affects all tear/non-tear modifiers, with the only exceptions being ,  and , which don't work.

## Synergies

* Golden Trinket//: In addition to the further stat increase, each effect/trinket copy makes the spiral path larger.

## Interactions

* : Due to the unusual tear travel, Ring Worm may be used to hit enemies in the back, without having the need to be placed behind them.
* : The altered pattern tears travel in is confined to the beam.
	+ Isaac can benefit from Ring Worm's stat bonus and spectral tears without losing accuracy.

## Gallery

* Concepts for Worm Trinkets, including Ring Worm.

## Trivia

* The bullet pattern might be a reference to a power-up in the NES game *Uncle Fester's Quest*.
* Ring worm (or Dermatophytosis) is a fungal infection very common in children and teenagers. It involves scaly rings on the skin of the scalp, chest, arms, stomach and other places, and is not caused by any sort of worm despite its name.
Piggy Bank

**Piggy Bank** is a passive item.

## Effects

* Adds 3 Pennies on pickup.
* When Isaac takes damage, spawns 1 or 2 Pennies near him.

## Notes

* The coins that are dropped from Piggy Bank are not subtracted from Isaac's total.
* Other types of coins cannot be spawned by Piggy Bank, only normal Pennies.

## Interactions

* : Activates Piggy Bank's effect without actually taking any damage.
* Keeper/ Tainted Keeper: Drops 0-1 pennies instead.
* : Multiple copies will only add 3 more coins on pickup, with no additional coins dropping on taking damage.
Old Capacitor

**Old Capacitor** is an unlockable trinket added in *The Binding of Isaac: Repentance*.

## Effects

* Active items don't charge when clearing rooms. Adds a high chance to spawn a Lil' Battery when clearing a room, independent of the room's original drop.
	+ At base luck (0), the chance is 20%, maxing out at 33% at 4.34 Luck.

## Notes

* The exact chance for a battery dropping is

min
(
20
%
(
3
%
∗

L
u
c
k

)
,
33
%
)

{\displaystyle \min(20\% + (3\% \* \mathit{Luck}) , 33\%)}

.
	+ This means that the chance starts at 20% at 0 Luck, minimizes at 0% at -6.67 Luck, and maximizes at 33% at 4.34 Luck.
* This trinket can be dropped whenever the active item needs recharging, then picked up again once the item is fully charged. For active items that aren't used every time they're recharged (such as the D6), using the trinket this way can generate many free batteries each floor.

## Synergies

* : Since the 4.5 Volt also makes it so that active items don't charge when clearing rooms, this trinket can be picked up with no downside.
* +  /  / "Gulp!" pill: Since items do not automatically recharge upon being used, being able to hold both Old Capacitor and Dim Bulb together will allow the latter's effects to be constantly active, while the batteries allow control over when exactly to charge active items.
* : Also offers alternate rewards for the extra batteries.

## Trivia

* Old Capacitor is from the *Antibirth* mod.
* The pickup quote is a reference to an old joke game by LeatherIceCream, one of the *Antibirth* devs, where he makes a *Don't Starve* dating sim which he titled "Voltage Voltage Starving".
My Little Unicorn

**My Little Unicorn** is an activated item.

## Effects

* Gives invulnerability and +0.28 speed for six seconds, removing the ability to shoot tears and replacing it with the ability to deal contact damage to enemies.
	+ Isaac deals 40 contact damage to enemies, once per second.
	+ Isaac deals 20 contact damage to enemies, twice per second.
		- If an enemy is at 40 HP or less, the contact damage is increased to 40 for that enemy.

## Notes

* The invulnerability effect negates all forms of damage, including health loss from Blood Donation Machines and Devil Beggars.
* Does not prevent Heart Container loss from Health Down pills or Devil Deals.
* Ending the current run via opening the end chest while My Little Unicorn is active will cause the credits and main menu music to be sped up. The effect ends upon restarting the game or starting a new run.
* card provides the same effect of this item when used.

## 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 rainbow-colored wisps in the middle ring. The wisps orbit Isaac more quickly than normal wisps and change colors constantly, with both of these effects being boosted while My Little Unicorn is active. The wisps also deal an extra 8 contact damage, for a total of 15 contact damage per tick. When de-activated, the rainbow coloring slightly fades away.
* : Doubles the duration of invulnerability.
* 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 My Little Unicorn's damage and invincibility.

## Gallery

* 3DS The icon of My Little Unicorn as seen on the lower 3DS screen.

## Trivia

* The item is a reference to the show *My Little Pony: Friendship is Magic*. The unicorn is one of the three types of ponies in the show, the others being the pegasus and the earth pony. A notable unicorn from the show is Twilight Sparkle, its main character.
* In the original *Binding Of Isaac*, using the item changed the music instead of speeding it up.
* If you pause the game while under the effect of My Little Unicorn, the music plays indefinitely.
Night Light

### Collection Grid

*(page 4, column 20, row 3)**(page 4, column 20, row 3)**(page 4, column 1, row 4)*

**Night Light** is a passive item added in *The Binding of Isaac: Afterbirth*.

## Effects

* A cone of light shines from Isaac's chest that slows all enemies and enemy shots.
	+ The light will face the direction Isaac is moving.
	+ The light doesn't affect bosses, but it will slow their shots.
	+ The slow effect will disappear from enemies when the light stops shining on them, but shots will remain slow.
* Removes Curse of Darkness for the current floor.
	+ Doesn't provide immunity on later floors, but lessens the visual effect significantly, effectively removing the curse.

## Notes

* The light only needs to touch a shot once to slow it permanently.
	+ Doing a quick circular motion is effective to slow surrounding enemy shots, especially while fighting Hush.
	+ Overuse of this effect can cause unavoidable patterns, as the slowed shots will often still travel most of their original distance.
* Tainted Forgotten's light will always face right.
* This item is **not recommended** against The Beast, as the fires spawned by her will be slowed down significantly and pile up quickly, leading to no room to dodge.
* Doesn't remove Curse of Darkness afflicted by , no matter if Night Light was picked up before or after using the card. However, the visual effect is still lessened by the beam of light.

## Trivia

* This item is part of a set of bedtime-themed items, including , , , and .

## Gallery

* Night Light preview. Note that the light faces Isaac's firing direction instead.
* The Night Light concept art.
Remote Detonator

**Remote Detonator** is an activated item.

## Effects

* Activating the Remote Detonator will cause all Bombs placed by Isaac to explode.
* Bombs will no longer explode without the usage of the detonator.
* Gives 5 bombs when picked up. If the same instance of the item is picked up a second time in the same run, this effect will not be applied.

## Notes

* Remote Detonator gives Isaac five bombs for the price of three (using the bombs on the Donation Machine to trade for coins) when bought at a Shop, making its purchase a good value if the player is low on bombs.
	+ The Donation Machine explodes once bombed and while it drops many coins, it is destroyed for the rest of the run
* Remote Detonator does not control the explosions of Troll Bombs and Mega Troll Bombs.
* It does control throwable bombs spat out by  Bomb Grimaces, once picked up. The bombs can be carried throughout rooms without ever exploding until Remote Detonator is used, making a Bomb Grimace essentially equivalent to a Golden Bomb with this item.
* If Chub or Carrion Queen swallow a remote bomb, the bomb will be released from them after the animation unless it is detonated manually.

## Synergies

* // + : The active item bombs are affected by remote detonator.
* : Undetonated bombs can be used to maximize creep damage.
* : Bombs placed will chase after the enemy, making it easier to do massive amounts of damage to enemies.
* : Spawns wisps in the inner ring when bombs placed by Isaac explode. Using Remote Detonator also causes the wisps' tears to explode, dealing 16.5 damage to enemies that are close to them (24 if Isaac has ).
* / : The Troll Bombs generated will not explode until the Remote Detonator is used, unlike normal Troll Bombs.
* : Remote Detonator can be used to detonate the fired bombs early, which can be useful against moving enemies.
* : The bombs automatically dropped by No. 2 will not detonate on their own, greatly reducing the risk of accidental explosive self-damage.
* : Rockets do not explode on impact with surfaces, requiring manual detonation.
	+ **Rocket in a Jar + Dr. Fetus:** Rockets fired with Dr. Fetus will still explode on impact, but can be manually detonated.

## Interactions

* : No effect.
* : Remote Detonator can be used on the original bomb, but not on the small bombs that are spawned.

## Trivia

* This item is used in Demo Man (challenge #9).

## Gallery

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