Book of Shadows
ItemRebirthUnlocked
activeGame ID 58★★★★
How do you unlock Book of Shadows?
Verified starting unlockSource data confirms that no unlock is required.
Creates a protective shield, nullifying all types of damage in the current room for 10 seconds.
Available from the start
No unlock needed — this is available in every new save file.
What unlocking Book of Shadows leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13