A thrown vial of volatile Thornplant bile. On landing creates a 10-ft radius circle of bone shards and acid, which lasts 2 turns.

All creatures within the radius when the vial is thrown must succeed a DC13 DEX save or take an extra 3d6 acid and be knocked prone. 

All creatures starting their turn in the circle take 1d6 acid damage and 1d6 piercing.