Acid Potion

Delivers 4d2 acid damage when quaffed or thrown.

Acid potions will dissolve most items dipped in them, and quaffing one or throwing it over you will cure Turning to Stone. You can create them by dropping empty bottles into an acid pool, but retrieving them is really dangerous, unless you have acid resistance or boots of water walking. (Fetch is not as helpful as it used to be, since you need to see the new potions first.) The splash of an acid potion will convert smoke into acid smoke.