Gumshoos GX (Secret) -/149 - Holofoil SM Base Set - Secret Rare

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This attack does 50 damage times the amount of Energy attached to your opponent's Active Pokémon. (You can't use more than 1 GX attack in a game.)

Pokémon-GX rule: When your Pokémon-GX is Knocked Out, your opponent takes 2 Prize cards.