Acid Slick

You conjure a spray of gleaming acid that covers the ground in a 60-foot cone. Until the spell ends, ground in the affected area is covered by slippery acid, making it difficult terrain. When it appears, each creature standing in the area takes 4d4 acid damage and must succeed on a Dexterity saving throw or fall prone. A creature that enters the area, moves through the area, or starts its turn there takes 4d4 acid damage and must also succeed on a Dexterity saving throw or fall prone.

In addition, whenever a creature falls prone within the area or ends their turn while prone within the area, takes takes 6d4 acid damage. This spell only affects creatures that are on the ground. The effect lasts 3 rounds.