Mewtwo deck
I can see this deck working currently now seeing as we have the new set. As it stands having 2 lines of stage 2 pokemon and especially one with only a single copy each, means that we will not see our pieces fast enough. Therefore, with the current set being added may I suggest dropping the giovanni for a Chatot. With the new chatot you can cycle your hand and see more of your deck far better than just hoping to draw into our oaks. In fact if our opponent keeps many supporters in thier hand it allows us to draw more of our deck. If we play as many cards as possible, with evolving and items and our opponent does not match our card usage that means our typical 2-3 card hands turn back into a 4-5 card hand, effectively being an oak, but on a body and only for 1 energy. Giovanni is a good card to drop as our Pokémon here are looking to 1 hit with big attacks and tend not to either meet the thresholds of current ex Pokémon or are outright knocking out our opponents.