Acid Trail

When you cast this spell, you leave a trail of acid in every space you occupy for the rest of your turn. The acid lasts for the spell's duration, and emanates noxious fumes 5 feet in the air above each space. Creatures entering a space with the acid and fumes for the first time on a turn must make a Constitution saving throw, taking 10 (3d6) acid damage on a failed save or half as much on a success.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 2d6 for each slot level above 2nd.