Gardevoir-Mega @ Gardevoirite
EVs: 224 HP / 252 Def / 32 Spe
IVs: 0 Atk
- Stored Power/Psyshock
- Calm Mind
This set takes advantage of how easy it is to wear down Steel Types. You need some kind of lures to get rid of Excadrills, Ferrothorn and Mzors.
Magnezone is an outstanding partner in combination with Rotom-W to handle Sand Rush Excadrill.
Keldeo is a great teammate to weaken Amoonguss because with Clear Smog, you cant sweep with Stored Power. The Psychock version does not need Keldeo as a teammate.
Stored Power is recommended if you pass Defboosts to it, otherwise Psychock is usually superior, unless you are afraid of Unaware Spdef Clefable.
This set alone destroys some stall teams. If you do not have a Phaser or fast Taunter, it can be GG very quickly.
Healing Wish support is also recommended just in case that Heatran packs Flash Cannon:
Some replays to show the Set in action (I use a fun team but regardless it is 1600+)
http://replay.pokemonshowdown.com/ou-404599671 rest snore mega gardevoir sweep
http://replay.pokemonshowdown.com/ou-404610243 snore sweep with healing wish!