Effect
When an effect of your opponent's Xyz Monster is activated by detaching its own Xyz Material(s): Negate the activation, and if you do, destroy it.
Regarding the effect "When an opponent's Xyz Monster activates an effect by detaching an Xyz Material: Negate the activation, and if you do, destroy it": * You can activate this effect during the Damage Step. * You can only activate this card by chaining directly to an effect activated by an opponent's Xyz Monster that detaches an Xyz Material as a cost.
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