Mewtwo @ Heavy-Duty Boots  
Ability: Pressure  
EVs: 248 HP / 20 Def / 56 SpA / 184 Spe  
Timid Nature  
IVs: 0 Atk  
- Psystrike  
- Recover  
- Ice Beam  
- Will-O-Wisp  

Ditto @ Choice Scarf  
Ability: Imposter  
EVs: 248 HP / 8 Atk / 252 Def  
Relaxed Nature  
IVs: 0 Spe  
- Transform  

Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 244 HP / 252 Def / 12 Spe  
Impish Nature  
- Sunsteel Strike  
- Moonlight  
- Knock Off  
- Stealth Rock  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 248 HP / 16 Atk / 244 SpD  
Careful Nature  
IVs: 18 Spe  
- Knock Off  
- Roost  
- U-turn  
- Defog  

Zacian @ Heavy-Duty Boots  
Ability: Intrepid Sword  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Play Rough  
- Swords Dance  
- Crunch  
- Wild Charge  

Eternatus @ Heavy-Duty Boots  
Ability: Pressure  
EVs: 164 HP / 252 SpD / 92 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Recover  
- Flamethrower  
- Sludge Bomb