Tapu Lele + Salazzle + Mamoswine

Tapu Lele @ Choice Specs
Ability: Psychic Surge
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Psychic
- Moonblast
- Hidden Power [Fire]
- Energy Ball

Salazzle @ Life Orb
Ability: Corrosion
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Nasty Plot
- Sludge Bomb
- Fire Blast
- Toxic

Mamoswine @ Choice Band
Ability: Thick Fat
EVs: 252 HP / 252 Atk / 4 SpD
Adamant Nature
- Ice Shard
- Superpower
- Icicle Crash
- Earthquake

Landorus-Therian @ Rocky Helmet
Ability: Intimidate
EVs: 248 HP / 244 Def / 8 SpD / 8 Spe
Impish Nature
- Earthquake
- Stealth Rock
- U-turn
- Stone Edge

Rotom-Wash @ Sitrus Berry
Ability: Levitate
EVs: 248 HP / 132 Def / 128 Spe
Bold Nature
IVs: 0 Atk
- Volt Switch
- Hydro Pump
- Will-O-Wisp
- Thunder Wave

Celesteela @ Leftovers
Ability: Beast Boost
EVs: 252 HP / 4 Atk / 252 Def
Lax Nature
- Protect
- Leech Seed
- Flamethrower
- Heavy Slam