Acid shower

You form acidic energy which you shoot out to an area within 200ft of you where the acidic energy expands to a 15ft sphere. All creatures in the sphere must make a dexterity saving throw taking 8d6 acid damage on a fail, half damage on a success. 

At higher levels: If you cast this spell using a spell slot of 4th level or higher, the acid damage increases by 1d6 for each slot level above 3rd.