Mew @ Leftovers

Trait: Synchronize
EVs: 4 HP / 252 SAtk / 252 Spd
Timid Nature (+Spd, -Atk)
- Nasty Plot
- Psyshock
- Aura Sphere
- Roost
Sharpedo (M) @ Life Orb

Trait: Speed Boost
EVs: 4 HP / 252 Atk / 252 Spd
Adamant Nature (+Atk, -SAtk)
- Protect
- Waterfall
- Crunch
- Aqua Jet
Flygon (M) @ Choice Scarf

Trait: Levitate
EVs: 252 Atk / 4 SDef / 252 Spd
Adamant Nature (+Atk, -SAtk)
- U-turn
- Earthquake
- Dragon Claw
- Stone Edge
Rotom-H @ Choice Scarf

Trait: Levitate
EVs: 4 HP / 252 SAtk / 252 Spd
Modest Nature (+SAtk, -Atk)
- Volt Switch
- Overheat
- Trick
- Hidden Power [Grass]
Hitmontop (M) @ Leftovers

Trait: Intimidate
EVs: 252 HP / 252 Def / 4 SDef
Impish Nature (+Def, -SAtk)
- Close Combat
- Toxic
- Rapid Spin
- Fake Out
Magneton @ Eviolite

Trait: Magnet Pull
EVs: 168 HP / 252 SAtk / 88 Spd
Modest Nature (+SAtk, -Atk)
- Substitute
- Hidden Power [Ice]
- Charge Beam
- Thunderbolt