Bane's Fist

As part of the action used to cast this spell, you must make a melee attack with a weapon against one creature within the spell's range, otherwise, the spell fails.
On a hit, the target suffers the attack's normal effects and takes an additional 1d8 Bludgeoning damage, and the attack's damage becomes magical if it wasn't already.

At Higher Levels. The extra damage increases by 1d8 at 5th level (2d8), 11th level (3d8), and 17th level (4d8).