The Necronomicon is an unlockable activated item.
- Deals 40 damage to every enemy in the room.
- This item belongs to the Bookworm set. Collecting three items from this set will transform Isaac into Bookworm.
- Many collectibles will produce effects similar to the Necronomicon, such as depleting a Black Heart or blocking projectiles with Dry Baby.
- The Necronomicon deals a considerable amount of damage to bosses that have multiple damageable parts, e.g. Larry Jr. and The Hollow.
- This item also does high enough damage to instantly kill most non-boss enemies.
- A Missing Page / Missing Page 2: Increases the damage from 40 to 80.
- A Missing Page + Missing Page 2: The damage increase stacks for a total of 120 damage.
- The Necronomicon is a fictional grimoire appearing in the works of horror writer H.P. Lovecraft.
- The book seems to be bound in human skin, which explains the face on its cover.
- The face on the cover is another reference to The Evil Dead franchise, which has the same face on its Necronomicon.
|The Binding of Isaac: Rebirth|
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