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Upon picking up 3 items from the following list, Isaac will fire tears out of both eyes simultaneously 25% of the time. This effect stacks with items such as 15►20/20 20/20, 15►The Inner Eye The Inner Eye and 15►Mutant Spider Mutant Spider, multiplying the number of tears.

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

Activated Collectibles[edit | edit source]

Name ID Icon Quote Description Added in Repentance Quality
Anarchist Cookbook 5.100.65
Anarchist Cookbook
3 rooms
Summon bombs Spawns six Troll Bombs around the room. 1
Book of Revelations 5.100.78
Book of Revelations
6 rooms
Reusable soul protection Gives one Soul Heart, increases the chance for a Devil or Angel Room, and changes the boss of the current floor to a Harbinger if possible. 3
Book of Secrets 5.100.287
Book of Secrets
6 rooms
Tome of knowledge Gives the effect of 15►Treasure Map Treasure Map, 15►The Compass The Compass, or 15►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 for 10 seconds. 2
How to Jump 5.100.282
How to Jump
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 list of of familiars for the current room.

Added in Repentance Spawns a familiar from a list of of familiars for the current floor.

Satanic Bible 5.100.292
Satanic Bible
6 rooms
Reusable evil... but at what cost? Gives one 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. 0
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 +2 damage for the current room.
Removed in Afterbirth Guarantees a Devil Room or Angel Room will be open after beating a boss while holding it. Added in Afterbirth Increases the chance by 12.5%.
The Book of Sin 5.100.97
The Book of Sin
4 rooms
Reusable item generator Spawns a random pickup, pill, card, or trinket. 2
The Necronomicon 5.100.35
The Necronomicon
4 rooms
Mass room damage Deals 40 damage to every enemy in the room. 1
Added in Afterbirth † Book of the Dead 5.100.545
Book of the Dead
6 rooms
Rise from the grave Upon use, spawns a friendly Bony or an orbital bone for each enemy killed in the current room. 2
Added in Repentance Book of Virtues 5.100.584
Book of Virtues
4 rooms
Spiritual companionship On use, spawns an orbital Wisp familiar that fires spectral tears but can be destroyed. Also becomes a passive item that causes other active items to spawn themed Wisps. 3
Added in Repentance Lemegeton 5.100.712
6 rooms
Item summoner Spawns the ghost of a random passive item, which orbits Isaac but can be destroyed. While the ghost is alive, Isaac gains that item's effects. 3

Notes[edit | edit source]

  • As Jacob and Esau, it's not possible to cycle between three books to give both characters the transformation's effect. Each characters needs to pick up three different books, meaning six books in total.
  • Picking up a cloned book by using Added in Afterbirth15►Diplopia Diplopia or Added in Afterbirth †15►Crooked Penny Crooked Penny will count to the transformation, meaning that it can be obtained by picking up less than three books.

Trivia[edit | edit source]

  • A bookworm is a person who's devoted to reading, especially books.
  • Added in Repentance Book of Virtues is the only "passive" item to contribute to the transformation.

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