Prayer Card 
Effects
Notes
- If used after clearing a floor, before proceeding to the next one, it guarantees a new Heart Container every floor.
- Since it adds the eternal heart directly to the health bar instead of spawning it on the floor, the item is useless for (Keeper) Keeper.
Synergies
- (Added in Repentance)
Book of Virtues: Spawns white, heart-shaped wisps in the inner ring. Wisps' tears have 0.75 shot speed. The wisps' tears effectively act as though they have 
Sacred Heart.
- (Added in Afterbirth)
Car Battery: Grants one full Heart Container upon use.