Dragonclaw

Channeling draconic magic through your arm, it transforms into the arm of a mighty dragon. You then can move up to 15ft, without provoking opportunity attacks, before slamming the draconic hand down and causing a massive shockwave. All creatures within 10ft of the impact point must make a Strength saving throw, taking 3d8 thunder damage on a failed save, or half as much on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d8 for each slot level above 2nd.