Nihilego

Nihilego @ Focus Sash
Ability: Beast Boost
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Sludge Bomb
- Power Gem
- Sludge Wave
- Protect

Hydreigon @ Life Orb
Ability: Levitate
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Draco Meteor
- Dark Pulse
- Tailwind
- Protect

Metagross-Mega @ Metagrossite
Ability: Tough Claws
EVs: 252 Atk / 252 Spe
Jolly Nature
- Meteor Mash
- Zen Headbutt
- Bullet Punch
- Protect

Tapu Lele @ Choice Scarf
Ability: Psychic Surge
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Psychic
- Moonblast
- Dazzling Gleam
- Shadow Ball

Rotom-Wash @ Sitrus Berry
Ability: Levitate
EVs: 252 HP / 52 Def / 76 SpA / 108 SpD / 20 Spe
Calm Nature
IVs: 0 Atk
- Hydro Pump
- Thunderbolt
- Thunder Wave
- Protect

Heatran @ Shuca Berry
Ability: Flash Fire
EVs: 252 HP / 140 SpA / 76 SpD / 40 Spe
Serious Nature
IVs: 0 Atk
- Heat Wave
- Hidden Power [Ice]
- Earth Power
- Protect