Arcane rebuke

Take any old piece of garbage on you, gibber some gobbledygook preform a rude hand gesture, by doing so, that piece of garbage becomes warbling cone of pure rage full insanity. The target must take wisdom saving throw. On a hit, the target takes 5d20 force damage. On a 20, you become living fore damage for the rest of the day. As a result all your attacks become force damage.