Salamence-Mega @ Salamencite  
Ability: Moxie  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Dragon Dance  
- Dragon Claw  
- Return  
- Roost  

Ditto @ Choice Scarf  
Ability: Imposter  
EVs: 252 HP  
Mild Nature  
IVs: 30 Atk  
- Transform  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 248 HP / 8 Atk / 252 SpD  
Careful Nature  
- Sacred Fire  
- Brave Bird  
- Defog  
- Roost  

Melmetal-Gmax @ Choice Band  
Ability: Iron Fist  
EVs: 252 HP / 252 Atk / 4 SpD  
Adamant Nature  
- Double Iron Bash  
- Earthquake  
- Superpower  
- Ice Punch  

Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 252 HP / 252 SpA / 4 SpD  
Modest Nature  
IVs: 0 Atk  
- Whirlpool  
- Perish Song  
- Protect  
- Judgment  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 HP / 252 Atk / 4 SpD  
Adamant Nature  
- Earthquake  
- Fire Punch  
- Stealth Rock  
- Bulk Up