Dissipate

You touch a creature or object, dissipating tiny pieces of it harmlessly into the surrounding area. Make a melee spell attack against the target. You have advantage on the attack roll if the target is wearing no manufactured armor. On a hit, the target takes 1d8 force damage.

The spell's damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).