The Necronomicon is an unlockable activated item. Upon use, 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...

Collecting three items from this set will transform The Necronomicon into an upgraded form. Many collectibles will produce effects similar to the Necronomicon, such as depleting a Black Heart or blocking projectiles with Dry Baby.

Use the XIII Death Tarot Card 4 times over multiple playthroughs. The Necronomicon is an unlockable activated item. Upon activation, all enemies in the room will be damaged. Triggering the effect of the trinket A Missing Page will also count towards unlocking The Necronomicon.

How to unlock? The Necronomicon is an unlockable active item in The Binding of Isaac. Deals 40 damage to everything in the room. A Missing Page and Missing Page 2 each add +40 to the damage, stacking up to 120 in total. This page shows the latest information as of the new Repentance+ (Online Co-op) DLC.

Necromancer is a transformation added in The Binding of Isaac: Repentance+, upgrading Isaac's Necronomicon after picking up its page item and trinket. The Necronomicon charge becomes a special purple bar that depletes by 10% each use.

Hey, I have about 45 hours on rebirth right now, but i still didn't unlock the necronomicon. The wiki doesn't specify how it's unlocked, can anyone clear this up for me? Thanks!

Collecting all 3 items and trinkets from this set will upgrade The Necronomicon and give Isaac a 5% chance to deal 120 damage when taking damage.This item contributes towards the Bookworm transformation.

Everything you need to know about The Necronomicon from The Binding of Isaac series. Visit https://tboi.com for more Isaac item info!Nicalis official website...

The Necronomicon "Mass room damage" Deals 40 damage to everything in the room when used Counts as 1 of 3 book items needed towards the Bookworm transformation Unlock this item by using 4 XIII...

How to unlock: Beat each of the seven sins (Greed, Wrath, Sloth, Lust, Pride, Gluttony, Envy) at least once. As you can't influence when these will appear, it might take a while until you unlock this item, however it will usually happen fairly quickly.