Effect
Cannot be destroyed by battle or card effects while your opponent has a face-up card in their Field Zone. You can only use each of the following effects of "I.A.S. -Invasive Alien Species-" once per turn. If your opponent has a face-up card in their Field Zone: You can target 1 monster they control; destroy it, and if you do, this card gains 1000 ATK. If your opponent has a face-up card in their Field Zone, while this card is in your GY: You can Special Summon this card.
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