So I've been running my mega Mewtwo X as a mixed sweeper/tank using the set Recover, Barrier, P-u-P, and Psychic. It has 252 atk EV's, 252 Spd, and 6HP. Docile. My strat is I throw him in against a wall poke, set up my def with Barrier and Recover, and then beat them up w/ repeated STAB P-u-P. Psychic works as coverage and STAB, and works well if they throw a physical wall. Aegislash is pretty much the bane of my existence though, having to hit him with x.5 Psychic, and a spec ghost type move would crush me. What do you guys think? Viable? It works great against the PL. He is pretty much the bane of walls, since P-u-P does more and more damage as you go. Also, I would change barrier/p-u-p fpr SD/Brick Break, but Mewtwo can't learn SD.