Xyz Revenge (LTGY-EN059) - Lord of the Tachyon Galaxy Unlimited

If your opponent controls a face-up Xyz Monster that has Xyz Material: Target 1 Xyz monster in your Graveyard; Special Summon it, then detach 1 Xyz Material from a monster your opponent controls and attach it to that monster as an Xyz Material. You can only activate 1 "Xyz Revenge" per turn.