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Obsidian Grindstone trinket
Obsidian Grindstone is a trinket in Fiend Folio, a mod for The Binding of Isaac.
Description
+0.13 tears.
+2.5 flat damage.
If holding another rock trinket, the stats boost is doubled.
Every 10 tears fired, the other held trinket will be grinded and rerolled into another rock trinket.
Each grind has a 15% chance to turn the other trinket into Pocket Sand instead, which won't grant an additional stat boost. This can happen only 2 times per floor.
Special synergies
The following special synergies and interactions for Obsidian Grindstone have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Trinket multipliers | Doubles the stat boosts. |
* 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.
Mineral Rock 
Thorny Rock 
Time-lost Diamond 
God's Marble 
Twenty-Sided Emerald 
Technological Ruby 2.0