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Keeper sprite

Athame is a passive unlockable item added in The Binding of Isaac: Afterbirth.


  • When Isaac is hurt, a black ring briefly appears.
  • The ring damages and kills enemies, and enemies killed by the ring have the chance to drop a black heart.


  • Serpent's Kiss: The black ring applies the poison caused by Serpent's Kiss. Enemies killed will have a higher chance of dropping black hearts.

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