Hollow Heart

Hollow Heart is a trinket added in The Binding of Isaac: Repentance.

Effects

 * Grants one bone heart container upon entering a new floor.
 * If the player has 12 heart containers, the added bone heart will replace the rightmost soul heart (if any).

Synergies

 * : Adds 2 bone heart containers instead of one.
 * : Bone hearts will persist after time leap to the upper floor, and you'll get another one after going back down.