This is Balance

Scizor-Mega @ Scizorite
Ability: Technician
EVs: 252 HP / 12 Atk / 116 Def / 128 SpD
Impish Nature
- Pursuit
- U-turn
- Bullet Punch
- Roost

Zygarde @ Leftovers
Ability: Aura Break
EVs: 240 HP / 176 Atk / 24 Def / 68 Spe
Adamant Nature
- Thousand Arrows
- Extreme Speed
- Substitute
- Toxic

Celesteela @ Shed Shell
Ability: Beast Boost
EVs: 252 HP / 4 Atk / 252 SpD
Sassy Nature
- Leech Seed
- Flamethrower
- Protect
- Heavy Slam

Clefable @ Leftovers
Ability: Magic Guard
EVs: 252 HP / 172 Def / 84 SpD
Serious Nature
IVs: 0 Atk
- Stealth Rock
- Soft-Boiled
- Moonblast
- Calm Mind

Zapdos @ Leftovers
Ability: Pressure
EVs: 248 HP / 244 Def / 16 Spe
Bold Nature
IVs: 0 Atk
- Thunderbolt
- Hidden Power [Ice]
- Roost
- Defog

Toxapex @ Black Sludge
Ability: Regenerator
EVs: 252 HP / 232 Def / 24 SpD
Bold Nature
IVs: 0 Atk
- Scald
- Haze
- Toxic Spikes
- Recover