Performage Cup Tricker

If this card is in your hand: You can target 1 Xyz Monster on the field; detach 1 material from it, and if you do, Special Summon this card, then 1 Xyz Monster on the field loses 600 ATK. If this card is detached from an Xyz Monster and sent to the GY to activate that monster's effect: You can target 2 Xyz Monsters you control; detach 1 material from 1 of them and attach it to the other. You can only use each Monster effect of "Performage Cup Tricker" once per turn.