Dark Requiem Xyz Dragon

3 Level 5 monsters If this card has "Dark Rebellion Xyz Dragon" as material, it gains these effects. ● Once per turn: You can detach 1 material from this card, then target 1 face-up monster your opponent controls; change its ATK to 0, and if you do, this card gains ATK equal to that monster's original ATK. ● When your opponent activates a monster effect (Quick Effect): You can detach 1 material from this card; negate the activation, and if you do, destroy that card, then you can Special Summon 1 Xyz Monster from your GY.