Upon picking up 3 book items from the following list ( 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, The Inner Eye and Mutant Spider, multiplying the number of tears.
The chance of firing double tears is not affected by Luck.
Increases the chance of a Devil Room / Angel Room appearing while held. Upon use, gives one Soul Heart, and replaces the boss of the current floor with a Harbinger if possible.
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.
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 / 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.
Unlike 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.
Book of Virtues is the only passive item to contribute to the transformation.
Bookworm can be very easily attained by going into a Library.