Only a Priest of Fo can cast this spell
Cleanse is a spell available to priests of Fo at 33 Faith.
When cast on a tile, it cleanses a 3x3 tile area of mycelium, converting mycelium and infected tree into normal grass and trees.
It will also convert dirt tiles into grass tiles.
- Activate a statuette of your god
- Right-click a gem
- Select Spells > Cleanse