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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 the latest information as of the new Repentance+ (Online Co-op) DLC.
To see information about this trinket for the previous Repentance version, 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