Acid Flask

As an action, you can throw the potion up to 30/60 feet. The target must make a DC 12 Dexterity check (with advantage if over 30ft away), taking 1d6 acid damage on a failed save. The acid burns the ground below and immediately (5ft) behind the target for 4 turns. Creatures that enter the area or end their turn there take 1d6 acid damage.