Thunder Punch

You envelop your fist in violently compressed thunder and strike a creature within your reach.

As part of casting the spell, make an Unarmed Strike against one creature within your reach, using your spellcasting ability modifier instead of Strength for the attack roll.

On a hit, the thunder surrounding your fist detonates and immediately dissipates. The target takes 4d10 + 4 Thunder damage and must make a Constitution saving throw.

On a failed save, the target has the Stunned condition until the start of your next turn.

On a successful save, the target suffers no additional effect.

Using a Higher-Level Spell Slot. The damage increases by 1d10 for each spell slot level above 2.