As an action, your free hand transforms into a grotesque weapon. Make a melee spell attack against the target.
On a hit, it takes 1d8 bludgeoning, piercing, or slashing (your choice) damage.
On a critical hit, it takes twice as much damage.
On a miss by 4 or less, it 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).