Athame

Athame is an unlockable passive item added in Afterbirth.

Effects

 * Whenever Isaac takes damage, a black ring briefly appears around Isaac, dealing damage to all nearby enemies.
 * When an enemy is killed with the black ring, there is a chance for it to drop a black heart.

Interactions

 * A Lump of Coal - The ring damage is halved.
 * A Lump of Coal + Proptosis - Proptosis effects override a Lump of Coal.

Synergies

 * Proptosis - The ring is much larger and deals 1.5x damage.
 * Serpent's Kiss - The black ring created by the Athame applies the poison from Serpent's Kiss. This means enemies killed will have higher chance to drop black hearts.

Trivia

 * An Athame is a ceremonial blade, generally with a black handle. It is the main ritual implement or magical tool among several used in the religion of Wicca, and is also used in various other neopagan witchcraft traditions. The athame stands as one of the four elemental tools in Wicca; traditionally standing for fire.
 * A black-handled knife called an athame appears in certain versions of the Key of Solomon, a grimoire originating in the Middle Ages.

Seeds
BEB6 CTEC (Curse room next to spawn teleports to Devil Room) (Normal or Hard)

JD62 DSFM (Curse room next to spawn sitting in the middle of the room)

Athame