Mewtwo EX

Open with Psychic Sphere's reliable 50 damage, then seamlessly transition into the devastating Psydrive. This brutal 150-damage attack becomes a constant threat thanks to Gardevoir's Psy Shadow ability, which ensures a steady stream of Energy support from the bench.

Mewtwo EX decks have finally gotten some major competition in the form of the new Dark Type EX cards from Space Time Smackdown, which can potentially get setup fast enough to break through most Mewtwo decks before they can get fully setup. however, this is still very much a powerful and worthwhile deck archetype to consider!