Arceus @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Swords Dance  
- Facade  
- Flare Blitz  
- Protect  

Corviknight @ Ability Shield  
Ability: Magic Bounce  
EVs: 252 HP / 252 Def / 4 Spe  
Bold Nature  
- Iron Defense  
- Body Press  
- U-turn  
- Roost  

Ho-Oh @ Heavy-Duty Boots  
Ability: Fur Coat  
EVs: 252 HP / 252 Def / 4 Spe  
Impish Nature  
- Sacred Fire  
- Brave Bird  
- Recover  
- Whirlwind  

Giratina @ Toxic Orb  
Ability: Poison Heal  
EVs: 248 HP / 8 Def / 252 SpD  
Careful Nature  
- Dragon Tail  
- Will-O-Wisp  
- Defog  
- Protect  

Magearna @ Leftovers  
Ability: Regenerator  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Volt Switch  
- Ice Beam  
- Spikes  
- Encore  

Deoxys-Attack @ Life Orb  
Ability: Protean  
EVs: 252 Atk / 20 SpA / 236 Spe  
Naughty Nature  
- Psycho Boost  
- Low Kick  
- Knock Off  
- Extreme Speed