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Fake Rock trinket
Fake Rock is a trinket in Fiend Folio, a mod for The Binding of Isaac.
Description
When inside a room that has an adjacent locked door, the first rock bombed will drop a 
Key.
If more than one locked door is present, or the door requires multiple keys to open, bombing more rocks will drop the keys required to open the doors.
Even if a door requires a different pickup to open (e.g. Arcades require coins), rocks will still drop keys.
Special synergies
The following special synergies and interactions for Fake Rock have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Trinket multipliers | No effect. |
* Note that not all possible synergies and interactions are listed here.
External links
- Check out the trinket description on the mod's external Wiki.
- Download Fiend Folio from the Steam Workshop.
Thunder Egg 
Unobtainium 
Sandstone 
Citrine Pulp 
Bloodstone 
Emetic Antimony