Concussive Punch

1st-Level Transmutation

Casting Time: 1 bonus action
Range: Self
Components: V, S, M (a stone from a shrine dedicated to a storm deity or a storm maiden)
Duration: Concentration, up to 1 minute

Your hands vibrate and emit a low hum upon casting this spell. For the duration, each time you hit a creature with an unarmed strike, the creature takes an extra 1d6 thunder damage.

At Higher Levels. If you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d6 for each slot level above 1st.