Groudon @ Leftovers  
Ability: Turboblaze  
EVs: 252 HP / 216 Def / 40 Spe  
Impish Nature  
- Precipice Blades  
- Stealth Rock  
- Spikes  
- Roar  

Regigigas @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Facade  
- Knock Off  
- Thunder Wave  
- Protect  

Arceus-Ghost @ Spooky Plate  
Ability: Magic Bounce  
EVs: 252 HP / 248 Def / 8 Spe  
Bold Nature  
IVs: 0 Atk  
- Calm Mind  
- Judgment  
- Aura Sphere  
- Recover  

Eternatus @ Ability Shield  
Ability: Ice Scales  
EVs: 80 HP / 252 SpD / 176 Spe  
Timid Nature  
- Sludge Bomb  
- Flamethrower  
- Dragon Tail  
- Recover  

Ho-Oh @ Life Orb  
Ability: Magic Guard  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Flare Blitz  
- Brave Bird  
- Recover  
- Whirlwind  

Necrozma-Dusk-Mane @ Leftovers  
Ability: Fur Coat  
EVs: 252 HP / 252 Def / 4 Spe  
Impish Nature  
- Swords Dance  
- Sunsteel Strike  
- Knock Off  
- Morning Sun