Effect
2 Level 4 Winged Beast-Type monsters Once per turn: You can detach 1 Xyz Material from this card; negate the effects of all face-up cards your opponent currently controls, and if you do, this card gains 300 ATK for each face-up card currently on the field, except this card (these effects are applied until your next Standby Phase).
The monster effect of "Ice Beast Zerofyne" is an Ignition Effect.
It does not target.
When activating the effect, detach 1 Xyz Material from this card as a cost.
The effect "negate the effects of all face-up cards your opponent controls" and the effect "this card gains 300 ATK for each other face-up card on the field" are treated as occurring simultaneously.
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