This one revolves around keeping Ferrothorn alive so he can tank to win. You gotta kill the Ferro counters with the leads such as fire/ fighting users. It works great and is kinda easy to use once you get the hang of it.
Politoed (M) @ Wacan Berry
Trait: Drizzle
EVs: 252 HP / 252 SAtk / 4 SDef
Quiet Nature (+SAtk, -Spd)
- Scald
- Surf
- Ice Beam
- Protect
Hitmontop (M) @ Fight Gem
Trait: Intimidate
EVs: 252 HP / 252 Atk / 4 SDef
Adamant Nature (+Atk, -SAtk)
- Fake Out
- Close Combat
- Sucker Punch
- Detect
Ferrothorn (F) @ Leftovers
Trait: Iron Barbs
EVs: 252 HP / 148 Def / 108 SDef
Relaxed Nature (+Def, -Spd)
- Leech Seed
- Gyro Ball
- Power Whip
- Protect
Rotom-W @ Choice Scarf
Trait: Levitate
EVs: 136 HP / 252 SAtk / 4 SDef / 112 Spd
Modest Nature (+SAtk, -Atk)
- Thunder
- Hydro Pump
- Trick
- Hidden Power [Ice]
Metagross @ Occa Berry
Trait: Clear Body
EVs: 252 HP / 252 Atk / 6 Def
Adamant Nature (+Atk, -SAtk)
- Bullet Punch
- Meteor Mash
- Earthquake
- Protect
Tornadus (M) @ Flying Gem
Trait: Prankster
EVs: 4 HP / 252 Atk / 252 Spd
Jolly Nature (+Spd, -SAtk)
- Acrobatics
- Tailwind
- Taunt
- Protect