Jukebox Hero

Say You Will (Politoed) @ Water Gem
Trait: Drizzle
EVs: 252 HP / 252 SAtk / 4 Spd
Modest Nature
- Hydro Pump
- Ice Beam
- Hidden Power [Grass]
- Perish Song

Urgent (Forretress) @ Leftovers
Trait: Sturdy
EVs: 252 HP / 252 Def / 4 SDef
Relaxed Nature
IVs: 0 Spd
- Rapid Spin
- Stealth Rock
- Volt Switch
- Gyro Ball

Double Vision (Rotom-Wash) @ Choice Scarf
Trait: Levitate
EVs: 4 HP / 252 SAtk / 252 Spd
Timid Nature
- Volt Switch
- Hydro Pump
- Hidden Power [Ice]
- Trick

Hot Blooded (Scizor) @ Choice Band
Trait: Technician
EVs: 248 HP / 252 Atk / 8 SDef
Adamant Nature
- U-turn
- Bullet Punch
- Superpower
- Pursuit

Head Games (Gyarados) @ Leftovers
Trait: Intimidate
EVs: 88 HP / 248 Atk / 4 Def / 168 Spd
Jolly Nature
- Taunt
- Dragon Dance
- Waterfall
- Bounce

Jukebox Hero (Meloetta) @ Life Orb
Trait: Serene Grace
EVs: 56 Atk / 252 SAtk / 200 Spd
Naive Nature
- Relic Song
- Close Combat
- Thunder
- Psychic