Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 4 Atk / 252 SpA / 252 Spe  
Hasty Nature  
- Eruption  
- Rest  
- Stone Edge  
- Precipice Blades  

Arceus-Ground @ Earth Plate  
Ability: Multitype  
EVs: 252 HP / 220 Def / 36 Spe  
Bold Nature  
IVs: 0 Atk  
- Judgment  
- Ice Beam  
- Recover  
- Refresh  

Necrozma-Dusk-Mane @ Heavy-Duty Boots  
Ability: Prism Armor  
EVs: 252 HP / 188 Def / 32 SpD / 36 Spe  
Impish Nature  
- Sunsteel Strike  
- Stealth Rock  
- Thunder Wave  
- Morning Sun  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 248 HP / 208 Def / 52 SpD  
Impish Nature  
- Sacred Fire  
- Toxic  
- Defog  
- Whirlwind  

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

Arceus-Dark @ Dread Plate  
Ability: Multitype  
EVs: 252 HP / 112 SpA / 72 SpD / 72 Spe  
Calm Nature  
IVs: 0 Atk  
- Calm Mind  
- Judgment  
- Recover  
- Refresh