Mewtwo-Mega-X @ Mewtwonite X  
Ability: Steadfast  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Low Kick  
- Bulk Up  
- Zen Headbutt  
- Recover  

Arceus @ Life Orb  
Ability: Multitype  
EVs: 220 HP / 252 Atk / 36 Spe  
Adamant Nature  
- Swords Dance  
- Extreme Speed  
- Recover  
- Shadow Force  

Arceus @ Earth Plate  
Ability: Multitype  
EVs: 248 HP / 224 Def / 36 Spe  
Bold Nature  
IVs: 0 Atk  
- Defog  
- Judgment  
- Recover  
- Ice Beam  

Giratina @ Leftovers  
Ability: Pressure  
EVs: 252 HP / 4 Atk / 240 Def / 12 SpD  
Impish Nature  
IVs: 30 Spe  
- Rest  
- Defog  
- Toxic  
- Dragon Tail  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 HP / 240 SpD / 16 Spe  
Careful Nature  
- Toxic  
- Stealth Rock  
- Precipice Blades  
- Dragon Tail  

Ho-Oh @ Leftovers  
Ability: Regenerator  
EVs: 248 HP / 204 Def / 52 SpD / 4 Spe  
Careful Nature  
- Whirlwind  
- Sacred Fire  
- Sleep Talk  
- Toxic