Vicious Wrench

You target a bone in the target's body. The target must make a CON save. On a hit, the target takes 1d10 force damage. On save, half as much. If this is the killing blow, you wrench the bone from the body and it lands in your hand.

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