The team you requested

Mimikyu @ Mimikium Z
Ability: Disguise
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Shadow Sneak
- Swords Dance
- Play Rough
- Shadow Claw

Celesteela @ Leftovers
Ability: Beast Boost
EVs: 248 HP / 104 Def / 156 SpD
Relaxed Nature
- Leech Seed
- Protect
- Heavy Slam
- Flamethrower

Toxapex @ Black Sludge
Ability: Regenerator
EVs: 248 HP / 8 Def / 252 SpD
Calm Nature
IVs: 0 Atk
- Toxic Spikes
- Recover
- Haze
- Scald

Chansey @ Eviolite
Ability: Natural Cure
EVs: 244 HP / 252 Def / 12 SpD
Bold Nature
IVs: 0 Atk
- Thunder Wave
- Soft-Boiled
- Seismic Toss
- Stealth Rock

Sableye-Mega @ Sablenite
Ability: Magic Bounce
EVs: 248 HP / 8 Def / 252 SpD
Careful Nature
- Knock Off
- Will-O-Wisp
- Recover
- Protect

Gyarados @ Flyinium Z
Ability: Moxie
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Dragon Dance
- Bounce
- Waterfall
- Earthquake