Air Hammer

You charge your breath with dense arcane energy and exhale with the force of a flying anvil.
Make a spell attack against the target. If the attack hits, the creature takes 1d6 bludgeoning damage, and if the target's speed is 0, is prone, restrained, incapacitated, stunned or paralyzed or is an inanimate object you deal 1d12 damage instead.

The spell’s damage increases by one die when you reach 5th level (2d6 or 2d12), 11th level (3d6 or 3d12), and 17th level (4d6 or 4d12).