Thundering palm

A wave of thunderous force sweeps out from your hand. You make a spell attack and the target,  creature takes 3d8 thunder damage and is pushed 10 feet away from you. On a successful hit.

and the spell emits a thunderous boom audible out to 100 feet.

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