Library (Greed Mode Item Pool)

Items in this pool can be found in Library themed Super Secret Rooms in Greed mode.

Activated Collectibles[]

Name	ID	Weight	Description
Anarchist Cookbook	5.100.65	1	Spawns six Troll Bombs around the room.
The Book of Belial	5.100.34	1	+2 damage for the current room. Passively guarantees a Devil Room or Angel Room will appear while held. +2 damage for the current room. Passively increases the chance of finding a Devil Room or Angel Room while held.
Book of Revelations	5.100.78	1	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.
Book of Secrets	5.100.287	1	Gives the effect of Treasure Map, The Compass, or Blue Map for the duration of the current floor. If all effects are active, X-Ray Vision is provided for the floor instead. Highlights any Tinted Rocks and rocks with Crawl Space in the room.
Book of Shadows	5.100.58	1	Creates a protective shield, nullifying all types of damage in the current room for 10 seconds.
The Book of Sin	5.100.97	1	Spawns a random coin, heart, bomb, key, battery, pill or card near Isaac.
Monster Manual	5.100.123	1	Spawns a familiar from a specific selection for the current room. Spawns a familiar from a specific selection for the current floor.
The Necronomicon	5.100.35	1	Deals 40 damage to every enemy in the room.
Satanic Bible	5.100.292	1	Gives one Black Heart. Replaces the boss room item on the current floor with a Devil Deal.
Telepathy For Dummies	5.100.192	1	Gives homing tears for the current room. Also gives +3 range.
Book of the Dead	5.100.545	1	Creates a friendly Bony, Black Bony, or an orbital bone for each enemy killed in the current room. Creates a friendly Bony, Black Bony, Bone Fly, Revenant, or an orbital bone for each enemy killed in the current room.

Passive Collectibles[]

Name	ID	Icon	Weight	Description
Missing Page 2	5.100.262		1	Grants one Black Heart. Upon taking damage that reduces Isaac's health to one heart or less, deals damage to all enemies in the room. Increases the damage of Black Hearts and The Necronomicon-like effects by 40.

The Binding of Isaac: Rebirth