Team Galactic's Mental

(Title is from a phase I had where all my decks were named after pokémon crime syndicates)

The basic concept of this deck is: Marowak Ex but without the Ex part (and more damage)

Generally I don't like having Ex cards in my lists because of the huge value lost if they die, unless they sufficiently make up for that in another way as an engine or control source (e.g. Wigglytuff Ex, Moltres Ex)

Golurks instead of Marowak, Hypno to stall while you power up the Golurks since they take twice as much energy, Mewtwo as a meatshield if opponent hits their sleep check flips or you miss yours.

Mythical Slab to fish for pyschic cards, Leaf to pull Mewtwo for free, Blue to help tank a hit with Golurk, Sabrina for target selection.