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Hollow Heart trinket
Hollow Heart is an unlockable trinket in The Binding of Isaac, added in the Repentance DLC.
Description
Grants a 
Bone Heart upon entering a new floor.
Note
This page shows information as of the latest Repentance release.
To see latest up-to date information about this trinket for the new Repentance+ (Online Co-op) DLC, check this page instead.
How to unlock?
Defeat Mother as Tainted Forgotten.
Special synergies
The following special synergies and interactions for Hollow Heart have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Trinket multipliers | +1 Bone Heart is added. |
* Note that not all possible synergies and interactions are listed here.
External links
- Check out the trinket description on the external Isaac Wiki.
Nuh Uh! 
Modeling Clay 
Polished Bone 
Kid's Drawing 
Crystal Key 
Keeper's Bargain