M Gardevoir EX - 079 - Holofoil XY Steam Siege - Ultra Rare

Discard as many of your Benched Pokémon as you like. This attack does 10 more damage for each Benched Pokémon you discarded in this way.

Mega Evolution rule: When 1 of your Pokémon becomes a Mega Evolution Pokémon, your turn ends.

Pokémon-EX rule: When a Pokémon-EX has been Knocked Out, your opponent takes 2 Prize cards.