Fiend Folio: ReheatedHalf Black HeartHalf Black HeartPickup
+1 Half Black Heart.

When depleted, black hearts activate The Necronomicon effect, dealing 40 damage to all enemies in the room.
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Unlockable Grants costume Has YouTube video Animated icon Favorite (?)

Note that this page shows the previous Fiend Folio version before the RELOADED update.

To access the latest update and new items, please check the Fiend Folio: RELOADED page.


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Download the Fiend Folio: Reheated mod for The Binding of Isaac