Dragon's Gauntlet

Your hand, or that of a target you touch, transforms into a dragon's claw. For the duration of the spell, you can use your action to make a melee spell attack against a creature within reach; a hit does 2d6 slashing damage. When you hit, the claw does 1d6 additional acid, cold, fire lightning or poison damage.

A Higher Levels for each Spell Slot of 2nd level the additional damage increases by 1d6 (maximum 5th level)