recursal/Fanatic-Fandom huggingface dataset:
Isaac's Tomb

**Isaac's Tomb** is an unlockable passive item added in *The Binding of Isaac: Repentance*.

## Effects

* Spawns an Old Chest at the start of each floor.
* Old Chests are similar in appearance to Locked Chests and likewise require a Key to unlock, but have the color of a normal Chest and a worn-down appearance. When opened, they contain one of the following:
	+ 1-3 Soul Hearts (43% chance)
	+ 3 trinkets (42% chance)
	+ An Old Chest item (10% chance)
	+ An Angel Room item (5% chance)

## Notes

* The chest also spawns in the mirrored floor of Downpour II and Dross II if picked up before entering.
* During the Ascent, the chest spawns in the original starting room of each floor, right above the beam of light to the floor above.
* The chest does not spawn in Home.
* Does nothing on  Tainted Lazarus if the new floor is entered by the character without Isaac's Tomb.

## Interactions

* / : Additional copies of Isaac's Tomb have no effect. Only one chest is spawned at the start of the floor.
* /  /  / : No effect.
Glass Cannon (Challenge)

This article is about the challenge. For the item, see Glass Cannon.
**Glass Cannon** is challenge #11. Start off as  Judas with  and . The goal is to defeat Satan. This challenge is unlocked by unlocking , , and  Judas; which requires completing The Family Man (challenge #19), defeating Lokii, and defeating Satan respectively.

## Difficulty

* Starting the game with only one heart container. This means that without acquiring additional heart containers, Soul Hearts, or Black Hearts, doing any self-damage will instantly kill Judas.
	+ However, with the ability to access all Secret Rooms, Super Secret Rooms, and Crawl Spaces on all floors, as well as free access to all the pickups that tinted rocks, urns, mushrooms, skulls, and polyps provide, experienced players can get very easy runs.

## Strategy

* Epic Fetus is an incredibly powerful offensive item, so primarily focus on acquiring health upgrades and defensive items such as Pretty Fly (from a pill or Slot Machine), , , and .  and  can be helpful as well, as they do not require aiming to do damage.
* or  are highly useful as they prevent self-damage.
* is highly effective, because most enemies and some bosses will be pulled towards the missiles instead of targeting the player. However, finding it is extremely unlikely because it is only found in the Treasure Room item pool.

* Destroying all rocks and destructible objects on every floor, as well as accessing both Secret Rooms on each floor, is a vital aspect to completing the challenge easily.

* Loki's Horns are difficult to utilize effectively with Epic Fetus. However, the extra crosshairs can move through walls and are always the same distance from the character as the main crosshair, so pretend that they are not there, and just avoid taking damage from the main crosshair.

* will make this challenge incredibly easy. It synergizes with Epic Fetus, firing 10 blood lasers. If Loki's horns activate, the 40 lasers will usually cover an entire standard size room. With  or the   transformation, the 80 lasers will destroy most bosses in one shot
* overrides Epic Fetus, arguably making the challenge easier by removing any chance of self harm or need to aim Epic Fetus missiles.

## Reward

* Rules Card - Complete **Glass Cannon (challenge #11)**.

## Trivia

* A "glass cannon" is a term used for someone or something that deals high damage but can't take much damage.
Inner Child

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

## Effects

* Gives Isaac an extra life. Upon death, Isaac respawns in the current room with half of a Red Heart, a massive size down, and +0.2 Speed.
	+ If Isaac doesn't have any Red Heart Containers, he will respawn with a Half Soul Heart instead of a Half Red Heart.
* When Isaac respawns as the inner child, he emits a blood explosion that deals 35 flat damage to all nearby enemies.

## Notes

* Resurrection items activate in a set order. Inner Child is 5th in this order after , ,  Lazarus' inherent extra life, and .
* Once this item has been unlocked, if the current character's Tainted version was already unlocked or the current character is a Tainted character, it is guaranteed to spawn in the hidden closet in Home.
	+ This item will appear even if Inner Child had been obtained earlier in the run, allowing Isaac to have two copies of the item.
	+ Despite being hard-coded not to appear anywhere else for him, this specific occurrence of Inner Child will still spawn for  Tainted Lost.
	+ If this item is obtained in Home, a viable strategy is to intentionally die towards the end of the fight with Dogma. Isaac will be respawned with the size down and Speed up, and these effects will carry over to the Beast fight along with the healing provided by , making Isaac much harder to hit for the fight.
* The size down from being revived by Inner Child is the same as if Isaac had collected .

## Trivia

* Inner Child is a concept in popular psychology that there exists an "inner child" in every sub-conscious that contains memories of pain and trauma in youth.
* Specifically, Inner Child spawning in the Home closet may be a reference to the trauma seen in the Ending 21 ( Mother's Ending) – where Mom throws Isaac into a closet.
	+ In the reverse, perhaps the ending is also allegorical rather than historical: Mom's constant abuse "threw" Isaac's inner child into a closet.
* This is one of the very few items without the `offensive` tag that  Tainted Lost can obtain without the use of .
It's in the Cards

**It's in the Cards** is challenge #14. Start off with , , , , and 2 random tarot cards. The goal is to defeat Mom. This Challenge is available by default.

## Difficulty

A straightforward challenge but no Treasure Rooms, don't be afraid to use cards relatively frequently, as they charge fairly quickly.

## Strategy

* There will be access to cards throughout much of the run. Know what the cards do and use them accordingly.
* There isn't any special strategy, however it is not a bad idea to reroll until getting the  card and until getting great items in a Devil/Angel Room.
* If one has  unlocked, restarting until you obtain one is a viable strategy, as one can get powerful secret room items such as . With a decent amount of cards giving stats such as , , , and , one will quickly accumulate great stats.
* Picking up  can greatly influence the run, as  the Deck of Cards will create pills instead of cards.  pills will be allowed to spawn alongside cards.
* Carrying  can be quite useful, as the 25% chance to duplicate a card upon use is used constantly throughout the run.

## Reward

* SMB Super Fan - Complete **It's in the Cards (challenge #14)**.
Golden Chest (Item Pool)

Items in this pool can appear in Locked Chest, Bomb Chest, and Vault.

## Activated Collectibles

 Bob's Rotten Head | 5.100.42
 Tammy's Head | 5.100.38
 IV Bag | 5.100.135

## Trivia

* "Bag" and "sack" items were added to the Golden Chest pool, which previously contained only "head" items.
* In Repentance, the Golden Chest pool was overhauled to mostly include "household" items, the majority of which are Boss items. The only previous item to not have been removed from the pool is .
Hornfel

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

## Behavior

### Phase 1

Hornfel appears with his own specially designed boss room: each wall has multiple boss doors with minecart tracks connecting each pair of doors. After a short delay, he appears out of a random door riding a minecart and performs one of the following attacks:

* Occasionally, when Hornfel enters the room through a door, he is accompanied by 2 Fly Bombs.
* Throws 1-2 Bombs at Isaac. Each bomb has a small chance of having the  or  effect.
* Throws 3  that resemble mines. Each bomb has a delay and detonates after a few moments.
* Accelerates to a very high speed along one set of tracks, traveling in one direction, while frequently throwing out bombs. After multiple cycles, he slows down, gets sick, and vomits a fireball that releases fire trails in the cardinal directions upon landing.
* Sends out 1-2 decoy dummies with 4 HP on other tracks that burst into 6 Troll Bombs if killed or walked into.
* Other minecarts occasionally appear on other tracks independent of Hornfel, carrying a Fire Place, TNT, or a variety of other enemies:

 Bony
 Faceless
 Danny
 Gurgle
 Quakey
Hornfel and his decoys deal a whole heart of contact damage.

### Phase 2

Once Hornfel has taken enough damage, he falls out of his minecart and attempts to escape from the room via one of the doors surrounding the arena. He makes no attempt to attack Isaac, but he can still deal contact damage. In this phase, his contact damage is reduced to half a heart.

* Other minecarts carrying other monsters and objects can still appear as usual during this phase.
* If Hornfel escapes successfully, the fight ends as normal.
* If Hornfel is defeated, he drops either 3 Bomb pickups, , , , , or , and unlocks  if not already unlocked.

## Gallery

* Hornfel in-game.
* Hornfel after losing his cart.
* Hornfel fleeing.
* Hornfel's decoy dummy.
* Concept art of Hornfel and his behaviors.

## Unlockable Achievements

* Brimstone Bombs - After breaking **Hornfel**'s minecart, kill him before he can escape.

## Trivia

* Hornfel will sometimes taunt Isaac by sticking out his tongue while sending out his decoy dummies.
* Hornfels is the group name for a set of contact metamorphic rocks. They are known to be very hard and durable.
* The Horny Boys are a stitched amalgamation of Hornfel and Loki.
* Hornfel and Loki are siblings.

## References

1. ↑ https://twitter.com/edmundmcmillen/status/1491311684144697345?t=HIqu902V3aUtJqXMP5Oz8A&s=19
Guppy's Eye

**Guppy's Eye** is an unlockable passive item added in *The Binding of Isaac: Repentance*.

## Effects

* Shows the contents of Chests, Fire Places, Grab Bags and Shopkeepers before they're opened/destroyed.
* This item belongs to the  set. Collecting three items from this set will transform Isaac into Guppy.

## Notes

* Guppy's Eye does not show the contents of tinted rocks, Poops, and other obstacles.
* Guppy's Eye does display enemies that can be contained within chests.
* Chests and Grab Bags can only display up to four pickups at a time. If there are more than four, higher-value pickups like Bombs, Keys, and Soul Hearts will have priority on the display.
* If a Red Chest looks like it doesn't have anything in it, it will teleport Isaac to the floor's Devil Room / Angel Room.
* Due to how Trinkets generate, if a Chest displays a trinket, all future Chests will also display/give that trinket until it spawns in some way, at which point all Chests will display a new trinket.
* Mimic Chests will change their contents whenever their spikes pop out. The unchanged drops can still be obtained by:
	+ Opening them with  or .
	+ Using swing attacks (such as  The Forgotten, , , etc.)
* This effect works on all non-ending chests, including Mom's Chest.
* This item is substantially less useful in Greed Mode, due to the scarcity of chests.
* The contents of Sacks or Chests that haven't spawned yet will still be revealed (for example, in rooms that spawn such Chests or Sacks when Isaac pressed a hidden switch, etc.).

## Interactions

* : Picking up a second copy of the item gives Isaac a unique costume with both eyes replaced. This is purely cosmetic, and it will otherwise have no effect.

## Trivia

* Guppy's Eye is one of the few items that will give Isaac a unique costume when two copies are acquired, along with  and .
* This item was suggested on a Reddit post on the Binding of Isaac Subreddit.
* This item originates from the card game *The Binding of Isaac: Four Souls*. In it, Guppy's Eye forces all other players to play with their hands face-up on the table.
* Its pickup text is possibly a reference to the description of the Rasmus mask from *Hotline Miami*.

## References

1. ↑ https://www.reddit.com/r/bindingofisaac/comments/3x3yl6/guppys\_eye/
Guppy's Tail

**Guppy's Tail** is a passive item.

## Effects

* Grants a 1/3 chance of replacing Room Clear Awards with a Chest or a Locked Chest, but also a 2/9 chance to replace it with nothing at all.
* This item belongs to the  set. Collecting three items from this set will transform Isaac into Guppy.

## Notes

* The drawback to this item is that Keys become much more scarce, while increasing the amount of Locked Chests. This makes taking Guppy's Tail a potential liability early on.
* Due to any found Chests containing items while in Chest or Dark Room, Guppy's Tail can be a good way to quickly stack up more upgrades before facing the final boss.
* The effect does not apply to Pennies dropped in Greed Mode, meaning that this item has no effect in Greed Mode other than counting towards the Guppy Transformation.

## Synergies

* : Makes Key management easier by revealing which Locked Chests are worth opening and which are not.
* : Turns all chests into Red Chests, allowing Isaac to get Red Chest items much more quickly. Useful when pursuing the  transformation.
* : Increases the number of drops from Chests and counteracts the increased chance to run into Locked Chests.

## Trivia

* This item is used in Cat Got Your Tongue (challenge #8).
* The item  has Guppy's tail be completely black while Guppy's Tail has a white fur on the tip of the tail.
* In the *Wrath of the Lamb* DLC for the original game, this item had to be unlocked by beating a challenge titled "9 Deaths".
Habit

**Habit** is a passive item.

## Effects

* When Isaac is hit, his active item gains 1 room's worth of charge.

## Synergies

* + : Isaac could potentially become invincible on early floors or with , losing only half a heart per three hits taken.
* +  : Isaac gains one charge from Habit for every half-heart of damage that Sharp Plug deals, effectively granting double the charges when using Sharp Plug.
* + : Using the Dull Razor activates the Habit, but this does not restore its charge, only that of the item in the Schoolbag.
* + +: Using Dull Razor activates the Habit, fully recharging Dull Razor, allowing for infinite uses of the Dull Razor, infinite invincibility frames, and infinite proccing of on-hit effects
* : Both on-hit charge effects stack, granting Larynx 2 charges per hit.

## Interactions

* : Upon taking damage,  will be half-charged. However, taking damage before the last charge will break the cannon again.
* Duplicates: Doesn't stack; will still yield one charge per hit.

## Trivia

* The Habit was significantly nerfed from the previous game. In the original game, it would restore half of Isaac's item's required charge rather than just one room's worth of charge. This could essentially make Isaac unkillable if it was used in conjunction with , , or  and  for The Womb and beyond.
* This item is used in When Life Gives You Lemons (challenge #12).
Get out of Jail Free Card

"Open Sesame"

**Get out of Jail Free Card** is a special card added in *The Binding of Isaac: Afterbirth*.

## Effects

* Opens all doors in the current room, just like .

## Notes

* Get out of Jail Free Card can open:
	+ The door to the Mega Satan boss fight. The door will remain open after leaving the room.
	+ The fight in Boss Rush to leave early, but cannot be used to get into the Boss Rush room if the time limit has already passed.
* Get out of Jail Free Card cannot open:
	+ The door of a Challenge Room after the fight has started.
	+ The door to ???.
	+ A Strange Door.
	+ The flesh door to the Mom's Heart boss fight in Mausoleum II / Gehenna II.

## Trivia

* "Get out of Jail Free" is a card found in the board game *Monopoly*, allowing its user to escape jail early. The phrase has since spread and a "Get out of Jail Free Card" is also an idiomatic expression for something that would alleviate an undesirable situation.
Gasbag

### Found In

**Gasbags** are a unique enemy type found only in Corpse. While they are alive, they emit a ring of toxic gas that deals damage to Isaac if he stands in it for too long. Additionally, Gasbags will occasionally spawn a chain of 5 Army Flies to chase Isaac. The Gasbag's toxic cloud disappears a short time after it dies.

## Trivia

* The Gasbag first appeared in the *Antibirth* mod where it acted identical but could not spawn flies.
Divorce Papers

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

## Effects

* Grants one Bone Heart.
* +0.7 tears.
* Spawns  if it has been unlocked and not previously encountered during the run.

## Trivia

* The existence of this item suggests that the way Isaac’s father left his Mom as seen in Chest's ending (Ending 14) could have been through a divorce.
	+ A more detailed rendition of Divorce Papers can be found in The Binding of Isaac: Four Souls Card Game. The papers are signed by Isaac's mother, but not his father, implying that a divorce was filed but the process was left incomplete.
		- The details of the split can be discerned via the dialogue that plays during Ascent, as well as Ending 22.

## Gallery

* Concept for Divorce Papers on the right side, along with other Booster Pack items and trinkets, by Edmund McMillen.
Hollow Heart

**Hollow Heart** is an unlockable trinket added in *The Binding of Isaac: Repentance*.

## Effects

* Grants one Bone Heart container upon entering a new floor.
	+ If Isaac has 12 heart containers, the added bone heart will replace the rightmost Soul Heart (if any).

## Synergies

* : Allows Isaac to sacrifice a bone heart for tear delay every floor.
* : Bone hearts will persist when returning to a previous floor, and another will be granted after going back down.
* Golden Trinket / : Adds 2 bone heart containers instead of one.
Humbleing Bundle

**Humbleing Bundle** is a passive item.

## Effects

* Transforms all Bombs, Keys, Pennies, and Red Hearts into their respective Double versions.
* All Bombs, Keys, Pennies, and Red Hearts have a 50% chance to be replaced by their respective Double versions.

## Notes

* Only works specifically on Bombs, Keys, Pennies, and Red Hearts; other variants, like Nickels or Soul Hearts, etc., are not doubled.
* By bombing Donation Machines, Isaac can earn more money than is taken from the machine, giving an endless supply of coins until the machine breaks or he runs out of bombs.
* When used while fighting Greed, Hangers, or Keepers, every coin knocked out of Isaac will be worth two coins, allowing Isaac to net a profit.
* Coins dropped when taking damage from enemies such as Greed, Hangers, or Keepers have a chance to doubled, allowing Isaac to potentially recover all lost money or even net a profit.

## Synergies

* : Single pickup drops have a 2/3 chance to be doubled, which then become their doubled versions by Humbling Bundle.
	+ This results in an average increase from 1.33x more pickups to 2.67x more.
	+ This results in an average increase from 1.33x more pickups to 2x more.
* : Allows for replicating hearts. Using the jar with 4 hearts inside it will cause 8 to drop, allowing Isaac to create an infinite amount of Red Hearts.

## Interactions

* : No further effect.
	+ Due to Humbleing Bundle no longer guaranteeing double pickups, Bogo Bombs will *always* double bombs.
* : No further effect if multiple copies are obtained.

## Trivia

* The item is a reference to *Humble Bundle*, collections of games and soundtracks that are sold online through a "pay what you want" system. The original *The Binding of Isaac* was represented in three humble bundles.
* "Humbleing" is a common misspelling of the word "humbling", and may be a further pun on the reference to *Humble Bundle*.
	+ All the files related to the object, such as graphics and animations, use the correct spelling in their names.
Glyph of Balance

**Glyph of Balance** is an unlockable passive item added in *The Binding of Isaac: Afterbirth †*.

## Effects

* Grants 2 Soul Hearts.
* Modifies drops from Champion enemies depending on certain conditions.
* Also modifies room clear drops.
* The priorities of the drops, in order, are as follows:
	+ **Soul Hearts**: When Isaac has no Red Heart containers and less than 2 Soul Hearts.
	+ **Full Red Hearts**: While at 0.5 Red Hearts.
	+ **Keys**: When Isaac has no keys.
	+ **Bombs**: When Isaac has no bombs.
	+ **Full Red Hearts**: When Isaac has at least half a Red Heart container empty.
	+ **Pennies**: While Isaac has less than 15 pennies.
	+ **Keys**: When Isaac has less than 5 keys.
	+ **Bombs**: When Isaac has less than 5 bombs.
	+ **Trinkets**: If Isaac has no trinkets and there are no trinkets on the ground in the room.
	+ **Soul Hearts**: When Isaac has less than 6 total Heart containers of any kind.
	+ If none of the above conditions are true, items dropped will be rolled as normal.

## Notes

* The Glyph has no effect in Greed Mode or Greedier Mode aside from the Soul Hearts granted upon pickup; champions still never drop anything.
* Because of how the item works in the priorities listed above, this item is not recommended for  The Lost (except in combination with ) as he is always considered to be at half a Soul Heart, and all drops *from champions* are replaced with Soul Hearts.
	+ The Lost and  Tainted Lost ignore both rules for Soul Heart generation. This prevents the item from generating mostly useless Soul Hearts.
* When playing as  The Forgotten, the priority of the drops is based on the active form's health: for example, if The Forgotten has half a red heart or less, but The Soul was active right before the pickup drop and it had more than 2 soul hearts, the Glyph will skip over the full red heart drops to the next condition. Also if The Forgotten is full on pickups and health, has a trinket but has less than 6 bone hearts, the Glyph will always drop soul hearts unless The Soul is active at the moment of the drop.
* When playing as  Jacob and Esau /  Tainted Lazarus, the priority of the drops is based on the health of the character that has the Glyph.
* When playing as  Tainted Lazarus, the room drop will be modified when the character switches to the character that has the item on room clear.
* Chest drops override the Glyph of Balance.
* Empty room drops are replaced by Glyph of Balance drops, with the exception of heart drops in hard mode, which have a separate chance of being replaced with an empty drop.
* When playing as characters incapable of having red heart containers such as  ???, the Glyph will skip soul heart and red heart generation.
	+ It is still possible to get hearts if none of the other conditions are true.

## Interactions

* : Only one of the options will be modified by the Glyph.
* : Chest spawns are prioritized over Glyph of Balance, meaning it will be very hard to use the Glyph effectively.
Isaac's Fork

**Isaac's Fork** is a trinket.

## Effects

* Grants a chance of being healed for a Half Red Heart upon clearing a room.

## Notes

* Can be triggered upon clearing a wave in Greed Mode.
* The chance to be healed depends on the luck stat, and the formula used to determine the chance is:

1

10
−

⌊

L
u
c
k

∗
0.5

⌋

{\displaystyle \frac1 { 10 - \left \lfloor \mathit{Luck} \* 0.5 \right \rfloor}}

	+ At base luck (0), the chance is 10%, maxing out at 100% at 18 luck.
Henry

### Found In

**Henry** is a monster added in *The Binding of Isaac: Repentance* DLC and is exclusively found in Dross.

Henry appears only in a single rare room within the floor. When Isaac enters the room, Henry smiles and then gets flushed down a drain. Isaac can fire tears at it, but due to its high HP it is extremely difficult to kill, and would be pointless anyway as its only behavior is killing itself.

## Notes

* can be used to capture Henry, although when released it will still flush itself away, doing no damage to enemies. It also does not spawn properly if the room lacks a pit.
* Although Henry does not attack Isaac directly, it can still deal contact damage if the player has flight.
	+ Henry does not have its own kill icon, so if Isaac somehow manages to die from him, the death screen will instead show a bucket as the cause of death.
* Henry does not appear in the game's Bestiary, and as such, does not need to be killed to complete it.
* The room in which Henry spawns has an id of 485 and has a weight of 0.01. The rarity is further compounded by the room requiring a dead end with only a south exit, and as such cannot be generated by .
* Using  on Henry will not flush him, instead turning him into a poop.

## Trivia

* Henry was initially a design by Kilburn, and Edmund McMillen suggested that its behavior be doing nothing and being super rare, which matches its status today.
Hairpin

**Hairpin** is an unlockable trinket added in *The Binding of Isaac: Afterbirth † (Booster Pack #1)*.

## Effects

* Fully recharges Isaac's active item upon entering a boss fight.
	+ This effect only occurs the first time a Boss Room is entered; leaving and re-entering the Boss Room will not result in more recharges.

## Notes

* The trinket's effect will trigger once for each and every Boss Room. Even if there are multiple Boss rooms on the same floor for whatever reason (Curse of the Labyrinth, The Void)
* In Greed Mode, grants a full charge only for the two boss fights on the final level.
	+ Cannot appear in Greed Mode, though will function the same if accessed through the Debug Console.
* The effect is identical to picking up a Lil' Battery, with caveats listed in interactions.
* Recharges twice on Corpse II: 1st time happens when entering the boss room, 2nd time happens when entering the Mother fight.
* Does not fully recharge between Dogma and The Beast.

## Interactions

* : If the item doesn't have a full first charge level, it will be filled. If the first level is full, the second charge level will be filled.
	+ The item will gain both its charges.
* : Mega Blast gains only 3 charge units.

## Gallery

* Hairpin's original appearance prior to Booster Pack #4.
* Hairpin's appearance prior to Booster Pack #5.

## Trivia

* Hairpin is based on this Steam Workshop trinket by zarat.us.
* Hairpin's original description was "Poke that power outlet! Bosses charge you".
Glass Eye

**Glass Eye** is a passive item added in *The Binding of Isaac: Repentance* (v1.7.5).

## Effects

* +0.75 damage
* +1 luck.

## Interactions

* : Picking up a second copy of the item gives Isaac a unique costume with both eyes replaced. The damage up and luck up stack as expected.

## Trivia

* Glass Eye is one of the few items that will give Isaac a unique costume when two copies are acquired, along with  and .
Hook Worm

**Hook Worm** is a trinket.

## Effects

* Tears move shifting left to right on a square-wave-like path.
* +10 Range.
* +1.5 Range, +0.4 Tears.
* Grants spectral tears.

## Notes

* Effective range remains the same because the range buff only compensates for the tears tracing a longer path.
* Effective range is a bit lower, by about 1 tile.
* Shooting with this trinket equipped when next to a wall or block may cause the tear to travel into the wall.

## Synergies

* Golden Trinket / : In addition to the further stats increase, the square-wave-like pattern has a bigger amplitude.

## Interactions

* /  /  /  /  /  Tainted Azazel: Effect applies to the Brimstone beam, effectively increasing the width of the beam.
	+ It also adds an extra tick to the Brimstone beam.
	+ Azazel: Azazel gains the wider beam, but no range increase.
* The Forgotten: Bone club does not get any wider or attack any further  though he will still benefit from the tears up, making the trinket's main effect only work on  The Soul.
* / : No effect.
* : The beam overrides the worm's tear movement effect, but keeps the +10 range.

## Trivia

* Hookworms are parasitic worms that can enter through the skin from dirt that contains their eggs and larvae.
Gemini

Double Trouble

(with another Gemini or Rag Man)
Degraded Boss

This article is about the boss. For the item, see Gemini (Item).
**Gemini** is a boss that can appear:

* Only in the Basement.
* In the Basement and the Burning Basement.

Each twin has 140 HP. The large twin is called *Contusion* and the small twin is called *Suture*.

## Behavior

Gemini starts as a pair of bosses connected together by an umbilical cord.

* Contusion chases Isaac and periodically charges increasing his speed, but stops to catch his breath afterwards.
* Suture, while attached to Contusion, shoots a projectile towards Isaac if not behind an obstacle.
* If Contusion is killed first, Suture detaches and begins charging furiously at Isaac. He has high momentum and takes extra knock-back from tears which can cause him to gain speed.
	+ If Suture is killed first, there is no change to Contusion's behavior.

## Champion Versions

**Blue**: Suture shoots homing shots. Contusion will drop a Soul Heart if killed last.
**Green**: They start separated from each other and have no difference in behavior. However, if Contusion is killed last, it will usually drop a Red Heart or Half Red Heart, but will rarely drop any other type of Heart instead (Soul, Bone, Gold, etc).
## Gallery

* Gemini in-game.
* Blue Champion Gemini.
* Green Champion Gemini.
* Contusion in-game.
* Suture in-game.
* Gemini as one of  Delirium's forms.
* Contusion in-game prior to Repentance.
* Suture in-game prior to Repentance.
* Gemini as one of Delirium's forms prior to Repentance.

## Arena

When fighting Gemini, the following obstacles can spawn:

* Rocks in 4 different combinations
* Rocks will **always** appear when fighting Gemini.

## Notes

* Status effects will equally affect both Contusion and Suture even if it was only applied to one of them. This includes effects granting knockback such as .
	+ This also applies to Green Champion Gemini despite the twins being completely separated entities.

## Trivia

* Gemini appeared in the original *The Binding of Isaac.*
* Gemini seems to be an example of a parasitic twin, with Suture being the underdeveloped twin, dependent on Contusion.
* Blighted Ovum is the posthumous version of them, and Steven is the alternate version.
* The Gemini pair is named after the astrological sign of the same name; the symbol of Gemini is a pair of twins.
* The Gemini pair was originally designed to be a boss in *Gish* and was called Suture Contusion, with the larger twin being Contusion for the boot-shaped dent in his head.
* Contusion is the medical name for a bruise, whereas suture is the medical name for a thread used to close gaping wounds, commonly called stitches.
* The names of the brothers are inspired by a song by The Mars Volta
	+ The specific lyric comes from "Cicatriz ESP."
* In the Bestiary, Suture is referred to as "Gemini Baby".

## References

1. ↑ 1.0 1.1 https://www.reddit.com/r/bindingofisaac/comments/8ylum7/hey\_guys\_its\_me\_edmund\_im\_the\_guy\_that\_made\_this/e2cbvdf/
2. ↑ 2.0 2.1 edmundm:51416553970
Grub

### Found In

A **Grub** is a type of monster that appear infrequently in Caves and beyond. They are similar in appearance to Larry Jr. and can spawn alongside Larry Jr. or The Hollow in their respective boss rooms.

Grubs move around the room somewhat randomly until they line up with Isaac, after which they rapidly charge towards Isaac, similar to a Charger. Upon death, each of the Grub's segments will spawn a Maggot, Charger, or Spitty. Unlike Larry Jr. which requires each of its segments to be destroyed, as soon as one Grub segment is destroyed, the entire enemy will be destroyed.

## Notes

* Prior to Booster Pack #5, if a Grub spawned in the Flooded Caves, it had a high chance to spawn Drowned Chargers instead of Chargers.

## Gallery

* A grub with only its head section remaining, due to .

## Trivia

* Because of its similar movement behavior and design to that of Larry Jr. (along with the fact that Grubs can spawn in a Larry Jr. boss room), Grubs are also known as "Larry Sr." by *The Binding of Isaac* community.
Goat

Goats usually spawn in large groups and perform attacks depending on the number of other Goats around. When there is only 1 Goat it will chase Isaac and charge, attempting to ram him, if he is to his either side. If there are 2 Goats, one will perform the charge attack, the other will stop when near Isaac to shoot two blood shots in a spread followed by three blood shots in a spread in succession, similar to Krampus. Only 2 Goats can actively attack at one time and all other Goats will attempt to stay away from Isaac but can switch places with an active Goat if Isaac draws near to it.

## Variations

### Stage HP

 24
 5

### Found In

**Black Goats** act the same as Goats, but shoot three blood shots in a spread followed by four blood shots in a spread in succession, identical to Krampus. Additionally, they also gain the ability to shoot thin  lasers in the cardinal directions. When one Black Goat performs a  attack all other Black Goats mimic it and perform the attack even if they were passive and not one of the 2 active goats. If there is only one Black Goat, it still retains the  in addition to its ramming attack.
Glitter Bombs

### Collection Grid

*(page 4, column 7, row 4)**(page 4, column 7, row 4)**(page 4, column 8, row 4)*

**Glitter Bombs** is a passive item added in *The Binding of Isaac: Afterbirth*.

## Effects

* Grants 5 Bombs.
* Isaac's bombs have a 25% chance to spawn a pickup or trinket when they explode including other bombs.
	+ Isaac's bombs have a 63% chance to spawn a pickup or trinket when they explode, but the chance for either to generate decreases by 1% for each spawn until Isaac enters a new floor. This is to prevent items such as  or a Golden Bomb from providing unlimited resources. This means that the maximum spawns per floor is 63, although the final generation of a pickup or trinket will have a 1% chance to occur.
* Isaac's bombs have a 15% chance to charm random enemies in the room when they explode.

## Notes

* Picking up a Golden Bomb, , , or  with Glitter Bombs allows infinite pickup generation.
	+ In Greed Mode, Glitter Bombs cannot generate coins. Infinite pickup generation that isn't coins is still possible, however, so this can be worked around if Isaac has the  or , since it does still produce health.

## Synergies

* //: Each Troll Bomb has a chance to spawn a pickup or trinket including a battery or heart which can be taken advantage of for repeated uses of Anarchist Cookbook or Curse of the Tower respectively.
* /////: Has a chance to spawn a pickup or trinket when exploding.
* : Each additional explosion created has a chance to spawn a pickup or trinket.
* /: Missiles have a chance of spawning a pickup or trinket upon exploding.
* : Bombs have a chance of spawning pickups or trinkets upon exploding.
* : At eleven charges guarantees a golden bomb.
* : The butt bombs have a chance of spawning pickups or trinkets upon exploding.
* Red Locusts: Red locust explosions have a chance to spawn a pickup or trinket.
* : Each smaller bomb also has a chance of dropping a pickup or trinket.
* : Swallowed M80 explosions have a chance of spawning pickups or trinkets.

## Interactions

* : Extra explosions are unaffected by Glitter Bombs.
* : Removes contact damage from bombs due to overriding the flaming bomb graphics.
* : No effect on shots.
* Red Locusts: No effect on red locust explosions.

## Trivia

* The act of glitter bombing refers to showering individuals with containers of glitter.
Gurdy

Double Trouble

Degraded Boss

**Gurdy** is a boss that can appear in the Caves and the Flooded Caves.

## Behavior

Gurdy is completely stationary and will always appear in the upper middle of the room. She has three attacks:

* Ducks down into her body and emerges from the middle facing Isaac, firing 5 projectiles in a spread.
	+ She can do this below her and to her sides and will not perform this attack if Isaac is behind her.
* Spawns a Pooter near herself.
* Spawns two Attack Flies behind her.
	+ Spawned Attack Flies are weaker than normal, with only about 3 health and can be killed if Isaac walks into them, though they will still deal contact damage before dying.
* Summons two Boils in front of her.

## Champion Versions

**Green**: 11% larger and does not use her projectile attack. Instead, she summons monsters at a faster rate.
## Gallery

* Gurdy in-game.
* Green Champion Gurdy.
* Gurdy as one of Delirium's forms.

## Notes

* Gurdy will sometimes be accompanied by Attack Flies to the left and right of her and two Boils in the bottom corners of the room. She might also be accompanied by three Boils behind her.

## Trivia

* Gurdy appeared in the original *The Binding of Isaac*.
* Gurdy was originally supposed to be a pile of dead children, but it looked too confusing, so Edmund McMillen made her body made of guts instead.
* Gurdy's name is supposedly derived from a medical condition called G.E.R.D. (gastroesophageal reflux disease), more commonly known as acid reflux.
* Gurdy appears to be the third stage of the "Gurdy" boss line, with the first stage as Gurglings, second as Gurdy Jr., and final as Mama Gurdy.
* Upon entering a room with Gurdy in it, the player will usually be teleported to the bottom center of the room regardless of which side the player entered from.
	+ This teleporting effect occurs when Gurdy spawns in a Boss Challenge Room as well.
* Gurdy shares her name with a level from Edmund's previous game Super Meat Boy.
* Gurdy is female.
* Gurdy performs a taunting laugh animation if she hits Isaac.

## References

1. ↑ 1.0 1.1 1.2 https://edmundmcmillen.tumblr.com/post/51416553970/binding-of-isaac-fast-facts-now-they-need-to-do
Golden Trinket

**Golden Trinkets** are an unlockable type of trinket unlocked by beating Mega Satan with  Tainted Jacob.

## Effects

* Golden trinkets have their effects multiplied by 2 where applicable, identical to how the trinket works with .
	+ A Golden Trinket combined with Mom's Box has 3x strength.
	+ Some golden trinkets have special effects.

## Notes

* Once unlocked, any trinket drop has a 2% chance to spawn as a golden version of itself. This includes regular room drops, opening chests, using , finding them in the shop in Greed Mode, etc.
	+ This chance is not affected by luck, Mom's Box or difficulty settings.
* Holding a golden trinket counts as the player holding 2 of the normal version.
* Only trinkets that are affected by Mom's Box or can stack with each other are affected by their golden counterparts. Others will act just like the normal ones.
* Hardcoded drops such as  from ,  from beating Ultra Pride,  from bombing The Siren's skull and  for beating 3 bosses without taking damage cannot spawn as golden variants.
* Eden and  Tainted Eden's starting trinket can also be a golden one.

## Notable effects

* : Triggers the  effect whenever an activated item is used.
* : Increases the chance of red rooms spawning.
* : Having a golden version counts as having 2  items.
* : Spawned poops will be Golden Poops.
* : Prevents items with quality 0 from appearing.
* : Adds 4 Rosaries to all item pools.
* : The trinket won't be removed. Instead, it has a chance to turn into a non-Golden Store Credit.
* : The golden Tick can be dropped/replaced like any other regular trinket.
* /  / : In addition to the further stats increase, they have an increased effect on your tear trajectory.

## Trivia

* The ID, or more accurately subtype, of a golden trinket is the normal ID + 32768. For example, the ID of Golden  is 32807 (because it normally has an ID of 39).
	+ The Debug Console spawn code would in this case be 5.350.32807.
* Using the high damage debug flag, `debug 4`, causes all trinkets spawn as golden ones.

## Bugs

* Additionally, items spawned by chests with the gold effect applied will be golden as well, however other pickups dropped by chests will not be.
Ghost Baby

**Ghost Baby** is a passive item.

## Effect

* Spawns a familiar that follows Isaac around and fires spectral tears that deal 3.5 damage each.
	+ Ghost Baby shoots once per second.
	+ Ghost Baby 1.36 times a second.
* This item belongs to the  set. Collecting three items from this set will transform Isaac into a three-faced version of himself.

## Notes

* Together with , this item has a 0.50% chance to spawn from blown up skulls.
* Familiars that follow behind Isaac have a certain priority in how close their position is to him over other familiars, with Ghost Baby having 5th priority.

## Trivia

* There was a bug in the original game where picking up Ghost Baby for the first time could grant you the Platinum God achievement, even if you lacked other items on the collection page.
Gish

Degraded Boss

**Gish** is a boss that can appear in the Depths and the Dank Depths.

## Behavior

* Makes short hops towards Isaac, similar to Monstro.
* Fires a black  shot towards Isaac, leaving a large puddle of Black Creep on impact.
* Leaps off-screen and lands on Isaac's position twice in a row, similar to Monstro II.
	+ Leaves a large puddle of Black Creep on his first landing.
		- The Black Creep spawned by Gish's first jump will remain for the entire battle until Gish is killed.
	+ Spawns two Clots on his second landing.
		- There is a maximum of 2 Clots alive at once.
		- Gish deals a full heart of contact damage.

## Notes

* While just as common as other bosses in the Dank Depths' boss pool, Gish is only 1/4th as common as other Boss Room bosses in The Depths.
	+ Gish is the only boss to have more than 1 boss weight besides  The Matriarch.
* Gish will often be accompanied by Clotties.
* Unlike Monstro, if Isaac is somewhere that Gish cannot reach, he will stay stationary.

## Gallery

* Gish ingame.
* Gish firing an explosive shot.
* Gish as one of Delirium's forms.

## Trivia

* Gish appeared in the original *The Binding of Isaac*.
* He is a rare alternative to Monstro II.
* The item  gives Isaac a Gish-like appearance.
* The enemy Clots are tiny Gishes.
* Gish is the protagonist of the 2004 PC game *Gish*, created by Edmund McMillen.
* Gish is the only boss to be an alternate version of a posthumous boss, being Monstro II's alternative.
* Gish can be found in The Void, even before being unlocked.
Heart (Disambiguation)

**Heart** may refer to:

## Enemies

* Mask + Heart, a monster commonly found in Necropolis.
* Mom's Heart, the final boss of chapter 4.

## Items

* , a passive collectible that increases health.
* , a passive collectible that grants a stat boost every time red health is regenerated.
* , a passive collectible that grants increased damage for some familiars.
* , a passive collectible that adds an empty heart container when Isaac has 1 or less red hearts.
* , a passive collectible that grants a red heart container, a 1.2 damage multiplier, and a chance to occasionally fire extra spectral tears that orbit around Isaac.
* , a passive collectible that grants Isaac direct damage immunity, but allows indirect damage through a following heart familiar.
* , a passive collectible that grants homing tears, increased damage, increased range, decreased shot speed, and decreased tears.
* , an activated collectible that grants 1 Rotten Heart.
* , an activated collectible that heals Isaac for 1 Red Heart.

## Pickups

* Hearts, a type of pickup that comes in Red, Soul, Black, Eternal, Blended, Gold, Bone, Rotten, and Scared variants.

## Trinkets

* , which grants an increased chance to find hearts from room drops and chests.
* , which grants an increased chance to find Boss Challenge Rooms and champion enemies.
Item Tags quest

Items with this tag cannot be rerolled in most circumstances, and bypass character-specific limitations. Most items in this list are progression-related.

* Tainted Isaac: Items do not have a second option, and do not contribute to the 8-item limit.
* Tainted Cain: Items will not be decomposed into pickups, and can be picked up as normal.
* Tainted Eden: Items will not be rerolled upon hit.
It Hurts

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

## Effects

* Taking damage causes Isaac to release a ring of 10 tears and gain tears up for the current room.
	+ The first hit taken increases Isaac's tears fired per second by 1.2, then by 0.4 for every subsequent hit in the same room. This ignores the tears cap and can stack indefinitely.
	+ Each tear in the ring deals 10 damage and doesn't use Isaac's tear effects.

## Interactions

* : Two rings of tears are released at once.

## Trivia

* It Hurts is from the *Antibirth* mod.
	+ Prior to *Antibirth* it made its first debut in the *Binding of Isaac: Community Remix* mod for Flash Isaac.

## Gallery

* Isaac after taking damage while holding It Hurts.
Item Quality

**Item quality** is a hidden item mechanic added in *The Binding of Isaac: Repentance*, assigned to all items. The quality ranges from 0 to 4 and causes them to behave differently with certain items or automatically get rerolled if certain conditions are met.

## Mechanics Affected

* : Determines what kind of item is given by the bag, depending on the pickups put into it.
* ( Tainted Bethany): The  wisps spawned by this item are guaranteed to be quality 3 or higher.
* : If multiple copies, , or a golden version of the trinket is held, items with quality 0 are rerolled.
* : Automatically rerolls items with a quality of 0 or 1, and has a 33% chance to reroll items with a quality of 2.
* Tainted Lost: 20% chance of rerolling items with a quality of 2 or less.

## References

1. ↑ The qualities and categories are defined in `items_metadata.xml`.
Gemini (Item)

### Collection Grid

*(page 4, column 3, row 2)**(page 3, column 13, row 4)**(page 3, column 14, row 4)*

This article is about the zodiac item. For the boss, see Gemini.
**Gemini** is a passive item.

## Effect

* Spawns a conjoined familiar, much like Gemini's small twin, Suture. It chases enemies close to Isaac, dealing 3 damage per tick (~6.43 damage per second).

## Notes

* Despite its appearance and description, Gemini does not count towards the   transformation.

## Interaction

* : The familiar will stay in place relative to Isaac, but the effect of chasing enemies persists.
* : Suture will rest near King Baby if there are no enemies near Isaac, but will snap towards the enemy once one gets close enough to Isaac. Otherwise, no functional difference.
* : The familiar can be extended way past its attack range, and will still do contact damage, but will only chase when an enemy enters the usual aggro distance.

## Trivia

* The Gemini familiar is now animated, turning red and chasing enemies, similar to how Suture chases the player after Contusion is killed, based on this Steam Workshop mod by piber20.
* Gemini's item ID is 318, putting it outside the range of other Zodiac items that are 299 to 309.
Hushy

**Hushy** is an unlockable passive item added in *The Binding of Isaac: Afterbirth †*.

## Effects

* Spawns a Hush familiar that bounces diagonally around the room and deals contact damage to enemies.
	+ Hushy deals 2 damage per tick or 30 damage per second.
	+ While firing tears, Hushy stops moving.
	+ When Hushy stops moving, it can block shots.

## Notes

* During Isaac's hurt animation, when holding down a fire button, Hushy will continue to move until the animation is over.