As an action, your free hand transforms into a sledgehammer. Make a melee spell attack against a creature within 1.5 meters of you.
On a hit, the target takes 1d8 bludgeoning damage.
If you miss by 4 or less, the target takes half as much damage.
After you make the attack, your hand returns to normal.
At higher levels
This spell’s damage increases by 1d8 when you reach 9th level (2d8) and 17th level (3d8).