Acid

Acid was a grisly liquid that could cause major and permanent scarring, and possible death.

History
The Do'Urden patron and weapon master, Zaknafein, while transformed into a Zin-carla, willingly fell into a pit of acid to prevent himself from murdering his son, Drizzt. In this battle, Guenhwyvar, Drizzt's magical panther, also fell into the same chasm, but, with a trip to the Astral Plane, Guenhwyvar made a full recovery.