Bookworm

Transformations

Guppy	Beelzebub	Super Bum	Yes Mother?	Bob	Fun Guy	Leviathan	Conjoined
Spun	Seraphim	Oh Crap	Bookworm	Spider Baby	Adult	Stompy

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 20/20, The Inner Eye and 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	Quality
Anarchist Cookbook	5.100.65		Summon bombs	Spawns six Troll Bombs around the room.	1
Book of Revelations	5.100.78		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		Tome of knowledge	Gives the effect of Treasure Map, The Compass, or Blue Map for the duration of the current floor.	0
Book of Shadows	5.100.58		Temporary invincibility	Creates a protective shield, nullifying all types of damage for 10 seconds.	2
How to Jump	5.100.282		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		Temporary buddy generator	Spawns a familiar from a specific selection for the current room. Spawns a familiar from a specific selection for the current floor.	0
Satanic Bible	5.100.292		Reusable evil... but at what cost?	Gives one Black Heart. Replaces the boss room item on the current floor with a Devil deal.	4
Telepathy for Dummies	5.100.192		Temporary psychic shot	Gives homing tears for the current room. Also gives +3 range.	0
The Bible	5.100.33		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		Temporary DMG up	+2 damage for the current room. Guarantees a Devil Room or Angel Room will be open after beating a boss while holding it. Increases the chance by 12.5%.	3
The Book of Sin	5.100.97		Reusable item generator	Spawns a random pickup, pill, card, or trinket.	2
The Necronomicon	5.100.35		Mass room damage	Deals 40 damage to every enemy in the room.	1
Book of the Dead	5.100.545		Rise from the grave	Upon use, spawns a friendly Bony or an orbital bone for each enemy killed in the current room.	2
Lemegeton	5.100.712		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

Passive Collectibles

Name	ID	Icon	Quote	Description	Quality
Book of Virtues	5.100.584		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

Notes

• As Jacob and Esau / 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.
• Most likely due to the fact that Keeper's triple shot is innate and not from The Inner Eye, Bookworm will only add one tear to his shots, instead of three. This may be a bug.

Trivia

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