Primal savagery

Make a melee spell attack against one
creature within 5 feet of you. On a hit, the
target takes 1d10 acid damage. After you
make the attack, your teeth or fingernails
return to normal. The spell's damage
increases by 1d10 when you reach 5th
level (2d10), 11th level (3d10), and
17th level (4d10).