Toxapex @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 248 HP / 64 Def / 184 SpD / 12 Spe  
Calm Nature  
- Toxic Spikes  
- Knock Off  
- Haze  
- Recover  

Aegislash @ Leftovers  
Ability: Stance Change  
EVs: 252 HP / 184 SpA / 56 SpD / 16 Spe  
Modest Nature  
IVs: 0 Atk  
- Shadow Ball  
- Toxic  
- King's Shield  
- Substitute  

Hippowdon @ Leftovers  
Ability: Sand Stream  
EVs: 248 HP / 8 Atk / 252 SpD  
Careful Nature  
- Earthquake  
- Toxic  
- Slack Off  
- Stealth Rock  

Diancie-Mega @ Diancite  
Ability: Magic Bounce  
EVs: 28 Atk / 228 SpA / 252 Spe  
Hasty Nature  
- Moonblast  
- Diamond Storm  
- Mystical Fire  
- Earth Power  

Slowbro @ Psychium Z  
Ability: Regenerator  
EVs: 248 HP / 176 Def / 4 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Future Sight  
- Scald  
- Teleport  
- Slack Off  

Corviknight @ Leftovers  
Ability: Pressure  
EVs: 252 HP / 200 Def / 56 SpD  
Impish Nature  
IVs: 0 Atk  
- Defog  
- Body Press  
- Iron Defense  
- Roost