Primordial Fossil is a trinket in Fiend Folio, a mod for The Binding of Isaac.

Grants a 6.67% chance to shoot a barrage of 10 small Mysterious Liquid tears in a Monstro-attack style, that each deal Isaac's amount of damage and leave damaging green creep on the ground.

Crush Effect: Spawns Dirt Clump and Rolling Rock.

The following special synergies and interactions for Primordial Fossil have been documented.

* Note that not all possible synergies and interactions are listed here.

• Check out the trinket description on the mod's external Wiki.
• Download Fiend Folio from the Steam Workshop.