Ditto @ Choice Scarf  
Ability: Imposter  
EVs: 252 HP / 4 Atk / 252 Def  
Relaxed Nature  
IVs: 0 Spe  
- Transform  

Corviknight @ Shed Shell  
Ability: Pressure  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
- Roost  
- Defog  
- Body Press  
- U-turn  

Reshiram @ Heavy-Duty Boots  
Ability: Turboblaze  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Dragon Dance  
- Blue Flare  
- Earth Power  
- Draco Meteor  

Mewtwo @ Kasib Berry  
Ability: Pressure  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Hurricane  
- Psystrike  
- Calm Mind  
- Fire Blast  

Quagsire @ Shed Shell  
Ability: Unaware  
EVs: 252 HP / 252 Def / 4 SpD  
Relaxed Nature  
- Toxic  
- Recover  
- Scald  
- Earthquake  

Necrozma-Dusk-Mane @ Leftovers  
Ability: Prism Armor  
EVs: 252 HP / 4 Def / 252 SpD  
Careful Nature  
- Stealth Rock  
- Toxic  
- Sunsteel Strike  
- Morning Sun