Salamence @ Heavy-Duty Boots  
Ability: Intimidate  
EVs: 252 HP / 4 Atk / 252 Def  
Impish Nature  
- Dragon Claw  
- Shadow Claw  
- Roost  
- Defog  

Toxapex @ Black Sludge  
Ability: Regenerator  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Scald  
- Toxic Spikes  
- Haze  
- Recover  

Clefable @ Leftovers  
Ability: Unaware  
EVs: 252 HP / 4 Atk / 252 SpD  
Careful Nature  
- Knock Off  
- Toxic  
- Soft-Boiled  
- Heal Bell  

Ditto @ Choice Scarf  
Ability: Imposter  
EVs: 248 HP / 8 Atk / 252 Def  
Impish Nature  
IVs: 30 Atk  
- Transform  

Mew @ Leftovers  
Ability: Synchronize  
EVs: 252 HP / 252 Def / 4 SpA  
Relaxed Nature  
- Scald  
- Dazzling Gleam  
- Roost  
- Knock Off  

Latias (F) @ Leftovers  
Ability: Levitate  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Thunderbolt  
- Shadow Ball  
- Roost  
- Toxic