Thief of Destiny

You cause destiny to turn its back on the target.

Choose a creature within range that you can see. The target must succeed on a Charisma saving throw or have its fate be cursed for the duration. While cursed in this way, once per turn for the duration, when your target makes an attack roll, ability check, or saving throw, you can choose to also roll a d20. If your result is higher than the number rolled on the target's d20, the target fails its roll.