Chromatic Punch

As part of the action used to cast this spell, you must make an unarmed strike against one creature within the spell’s range, otherwise the spell fails. You choose acid, cold, fire, lightning, poison, or thunder.  On a hit, the target suffers the attack’s normal effects, as well as 1d4 bonus damage of the chosen type.

The spell’s damage increases by 1d4 when you reach 5th level (2d4), 11th level (3d4), and 17th level (4d4).