M Mewtwo EX (64) 64/162 - XY BREAKthrough Holofoil

This attack does 30 more damage times the amount of Energy attached to both Active Pokémon. This attack's damage isn't affected by Weakness.

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.