Team Rocket's Mewtwo ex

This Pokémon can't attack unless you have 4 or more Team Rocket's Pokémon in play.

You may discard up to 2 Energy from your Benched Pokémon. This attack does 60 more damage for each card you discarded in this way.

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