Regigigas @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Facade  
- Dragon Dance  
- Knock Off  
- Nuzzle  

Arceus-Fairy @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Moonblast  
- Earth Power  
- Spikes  
- Quiver Dance  

Blissey (F) @ Choice Scarf  
Ability: Imposter  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Trick  
- Recover  
- Final Gambit  
- U-turn  

Dialga @ Adamant Orb  
Ability: Tinted Lens  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Rash Nature  
- Doom Desire  
- Tail Glow  
- Dragon Tail  
- Roost  

Ho-Oh @ Leftovers  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Recover  
- Sacred Fire  
- Heart Swap  
- Baton Pass  

Giratina @ Griseous Orb  
Ability: Prankster  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Calm Nature  
IVs: 0 Atk  
- Parting Shot  
- Haze  
- Roost  
- Taunt