Ho-Oh @ Ghostium Z  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Brave Nature  
IVs: 0 Spe  
- Anchor Shot  
- Shore Up  
- Knock Off  
- Spectral Thief  

Chansey @ Eviolite  
Ability: Imposter  
Happiness: 55  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Shore Up  
- Anchor Shot  
- Haze  
- Defog  

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

Blissey (F) @ Toxic Orb  
Ability: Imposter  
EVs: 252 HP / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Fling  
- Soft-Boiled  
- Heal Bell  
- Parting Shot  

Zygarde-Complete @ Assault Vest  
Ability: Regenerator  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 128 Spe  
Sassy Nature  
- Core Enforcer  
- Nuzzle  
- U-turn  
- Rapid Spin  

Registeel @ Leftovers  
Ability: Prankster  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- U-turn  
- Destiny Bond  
- Recover  
- Encore