Acid Rain

You conjure a sinister cloud of caustic rain at a point you can see within range. Acid rains down in a 20-foot-radius, 100-foot-high cylinder centered on the cloud. The spell fails if you can't see a point in the air where the cloud could appear.

For the duration, the area is lightly obscured, and when a creature enters the spell's area for the first time on a turn or starts its turn there, it must make a Dexterity saving throw, taking 6d4 acid damage on a failed save, or half as much on a success. The caustic cloud dissipates after the spell ends.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the initial damage increases by 2d4 for each slot above 3rd.