Acid Cannon

A beam of acid forming a line 60 feet long and 5 feet wide blasts out from your hand in a line away from you. Each creature in range must make a Dexterity saving throw. A creature takes 9d8 lightning damage on a failed save, or half as much damage on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d6 for each slot level above 5th.