Converter
Effects
Notes
- Using this item on Black Hearts will activate the Black Hearts damaging effect.
- (Removed in Repentance) Must use with two full Soul Hearts to work. One and a half will not work.
Synergies
- (Added in Repentance) Book of Virtues: Spawns wisps in the middle ring, looking like hearts. Wisps have slightly higher health than average.
- (Removed in Repentance) Guppy's Paw: Allows Isaac to attain up to 10 Heart Containers and 1 Soul Heart.
- (Added in Repentance) Allows Isaac to attain up to 12 Heart containers.
Synergies
Interactions
- (Removed in Repentance) Car Battery: No effect.
- (Added in Repentance): Consumes 2 Soul Hearts and produces 2 Red Heart Containers.
- (Added in Afterbirth †) The Soul: Consumes Soul Hearts and produces (Bone Heart) Bone Hearts for (The Forgotten) The Forgotten. Does nothing when used by The Forgotten.
- (Added in Repentance) (Tainted Bethany) Tainted Bethany: When used while fully charged, adds 2 Blood Charges to her pool at no cost to her Heart total. When used with no charges, consumes 3 Blood Charges and produces 2, resulting in a net loss.
- With Car Battery: Consumes 3 Blood Charges and produces 4, still at no cost to Heart total, resulting in infinite Blood Charges.