>>26793561Ok, so the key way of using big hitters like Mega Medi is with slow pivoting back into it to let it take as many shots as possible at the opponent's team.
Medi's weaknesses are Fairy, Flying, and Ghost.
The best Fairy answer in the meta is Jirachi, not Heatran. SpDef Jirachi with Iron Head, Wish, Protect, and U-Turn is the way to go, since it lets you pivot back into Medi.
For Flying, you can probably use Rotom-W, since it's also a Lando-T and Mega Scizor and Mega Pinsir answer on top of dealing with Talonflame. It has Volt Switch to pivot back into Medi.
Ghost is tricky. Gengar and Alakazam (Shadow Ball) are pretty annoying to switch into because of Focus Blast, but you can use a Mandibuzz to deal with them. You can probably run standard for now, and then invest a bit more in SpDef if need be. Mandibuzz with Foul Play or Knock Off, U-Turn, Defog, and Roost is the way to go. I use U-Turn Mandibuzz as one of my tanky pivots and it doesn't let me down. That takes care of your hazard remover too.
Now you should be a bit weak to Scarf Tyranitar since Rotom-W doesn't really resist it, so you can fill the last 2 slots offensively. But we should also take note of the fact that Medi, your main attacker so far, is walled by bulky Psychic types and Ghost types like Mega Sableye. Plus you have all that pivoting. So I'd recommend taking advantage of LO Gengar, since it's a devastating attacker and can stallbreak (just watch out for Pursuit trappers). LO Gengar with Shadow Ball, Focus Blast, Taunt, and Pain Split can beat nearly anything on stall. I think that's the way to go.
For the last slot, I guess I would say something that can set hazards. You also need an answer to Mega Charizard Y and the team in general still has holes you can tweak (like being vulnerable to Mega Lopunny), so I'd say offensive SR Garchomp for now.