Mach Cyclone - You may have your opponent switch his or her Active Pokémon with 1 of his or her Benched Pokémon. 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.