Dark Requiem Xyz Dragon

2 Level 5 monsters

If this card has a "Dark Rebellion Xyz Dragon" as Xyz Material, it gains these effects.
● Once per turn: You can detach 1 Xyz Material from this card, then target 1 Level 5 or higher monster your opponent controls; its ATK becomes 0, and if it does, this card gains ATK equal to that monster's original ATK. These changes last until the end of this turn.
● During either player's turn, whan a card or effect that would destroy a card(s) is activated: You can detach 1 Xyz Material from this card; Special Summon 1 Xyz monster from your Graveyard, and if you do, negate that effect.