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Hollow Fossil trinket
Hollow Fossil is a trinket in Fiend Folio, a mod for The Binding of Isaac.
Description
+1.35 damage.
Crush Effect: Guarantees an Angel or Devil Deal on the current floor. Spawns a 
Black Heart instead of a 
Soul Heart.
Special synergies
The following special synergies and interactions for Hollow Fossil have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Trinket multipliers | Doubles the damage boost. |
* Note that not all possible synergies and interactions are listed here.
YouTube video
External links
- Check out the trinket description on the mod's external Wiki.
- Download Fiend Folio from the Steam Workshop.
Refund Fossil 
The Left Fossil 
Thank-You Fossil 
Curved Geode 
Haunted Geode 
Health Geode