Binding of Isaac: Rebirth Wiki
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Added in Afterbirth †

Upon picking up 3 book items from the following list (Added in Repentance 3 items with the book item tag), Isaac will fire tears out of both eyes simultaneously 25% of the time. This effect stacks with items such as 20/20 20/20, The Inner Eye The Inner Eye and Mutant Spider Mutant Spider, multiplying the number of tears.

The chance of firing double tears is not affected by Luck.

Activated Collectibles[]

Name ID Icon Quote Description Added in Repentance Quality
Anarchist Cookbook 5.100.65
Anarchist Cookbook
3 rooms
Summon bombs Spawns six Troll Bomb Troll Bombs around the room. 1
Book of Revelations 5.100.78
Book of Revelations
6 rooms
Reusable soul protection Increases the chance of a Devil Room Devil Room / Angel Room Angel Room appearing while held. On use, gives one Soul Heart Soul Heart, and replaces the boss of the current floor with a Harbinger if possible. 3
Book of Secrets 5.100.287
Book of Secrets
6 rooms
Tome of knowledge Gives the effect of Treasure Map Treasure Map, The Compass The Compass, or Blue Map Blue Map for the duration of the current floor. 0
Book of Shadows 5.100.58
Book of Shadows
3 rooms
Temporary invincibility Creates a protective shield, nullifying all types of damage in the current room for 10 seconds. 3
How to Jump 5.100.282
How to Jump
Unlimited
It's time you learned how Upon use, Isaac jumps in the direction he is currently moving, allowing travel over obstacles and enemies. 1
Monster Manual 5.100.123
Monster Manual
6 rooms
Temporary buddy generator Removed in Repentance Spawns a familiar from a specific selection for the current room.
Added in Repentance Spawns a familiar from a specific selection for the current floor.
1
Satanic Bible 5.100.292
Satanic Bible
6 rooms
Reusable evil... but at what cost? Gives one Black Heart Black Heart. Added in Repentance Replaces the boss room item on the current floor with a Devil Deal. 4
Telepathy for Dummies 5.100.192
Telepathy for Dummies
2 rooms
Temporary psychic shot Gives homing tears for the current room. Added in Repentance Also gives +3 range. 1
The Bible 5.100.33
The Bible
4 rooms
Temporary flight On use, Isaac gains flight for the current room. Instantly kills Mom, Mom's Heart, and It Lives when activated, but kills Isaac when used on Satan. 1
The Book of Belial 5.100.34
The Book of Belial
3 rooms
Temporary DMG up Removed in Afterbirth +2 damage for the current room. Passively guarantees a Devil Room Devil Room or Angel Room Angel Room will appear while held.
Added in Afterbirth +2 damage for the current room. Passively increases the chance of finding a Devil Room Devil Room or Angel Room Angel Room while held.
2
The Book of Sin 5.100.97
The Book of Sin
4 rooms
Reusable item generator Generates a random pickup, pill, card, or rune. 2
The Necronomicon 5.100.35
The Necronomicon
4 rooms
Mass room damage Deals 40 damage to every enemy in the room. 1
Book of the Dead 5.100.545
Book of the Dead
6 rooms
Rise from the grave Upon use, creates a friendly Bony Bony, Black Bony Black Bony, or an orbital bone for each enemy killed in the current room.
Added in Repentance Can also create a friendly Bone Fly Bone Fly or Revenant Revenant.
3
Added in Repentance Lemegeton 5.100.712
Lemegeton
6 rooms
Item summoner Spawns a wisp representing a random passive item, which orbits Isaac but can be destroyed. While the wisp is alive, Isaac gains that item's effects. Generation uses the current room's item pool 25% of the time, otherwise a random pool. 3

Passive Collectibles[]

Name ID Icon Quote Description Added in Repentance Quality
Added in Repentance Book of Virtues 5.100.584
Book of Virtues
4 rooms
Spiritual companionship On use, spawns a destroyable orbiting Wisp familiar that fires tears and deals contact damage. Also acts as a passive item that causes other active items to spawn themed Wisps. 3

Notes[]

  • As Jacob and Esau Jacob and Esau / Tainted Lazarus Tainted Lazarus, it's not possible to cycle between three books to give both characters the transformation's effect. Each character needs to pick up three different books, meaning six books in total.
  • Added in Repentance Unlike 20/20 20/20, the damage of doubled tears is not reduced. Each of the doubled tear shots does full damage.

Trivia[]

  • A bookworm is a person who's devoted to reading, especially books.
  • Added in RepentanceBook of Virtues Book of Virtues is the only passive item to contribute to the transformation.
  • Bookworm can be very easily attained by going into a Library Library.


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