Curse of Reversed Ability

You reap the powers of your enemy and capture them in the hand mirror. The target takes 4d6 psychic damage and must make a Charisma saving throw.

     On a failed save, the creature’s ability score modifiers and proficiency bonus are reversed to their negative or positive opposites. If their spellcasting ability becomes negative, the target cannot cast spells. If the target’s Dexterity or Strength modifier becomes negative, they cannot make attacks using the respective abilities. The target’s maximum hit points increase or decreases by their new constitution modifier times their level.

     If the creature fails its Charisma saving throw, the hand mirror used in this spell becomes a painting of the creature before it was affected by the curse. If the painting is torn by you, burned, or targeted by Remove Curse, it reverts to the curved hand mirror and the creature reverts to what it was before the spell was cast.

The spell can also be ended by greater restoration, heal, or wish.