Uno's Reverse

You have learned how to twist fate for one creature that you can see within range. The creature must make a CHA save versus your spell casting ability. On a failed save all dice rolls made by the target are reversed until the end of your next round. For any dice rolls, reverse the number order. For example, on a D6, 1 becomes 6, 2 becomes 5, 3 becomes 4, etc...