Thunder Snap

You snap your fingers next to a creatures ear, causing them to be stunned. Make a melee spell attack against the target. On a hit, the target takes 1d10 thunder damage, and it's stunned until the start of its next turn.

The spell's damage increases by 1d10 when you reach 5th level (2d10), 11th level (3d10), and 17th level (4d10).