Ditto @ Choice Scarf  
Ability: Imposter  
EVs: 252 HP / 8 Atk / 92 Def  
Impish Nature  
IVs: 0 Atk  
- Transform  

Zacian-Crowned @ Rusted Sword  
Ability: Intrepid Sword  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Close Combat  
- Play Rough  
- Wild Charge  
- Behemoth Blade  

Yveltal @ Assault Vest  
Ability: Dark Aura  
EVs: 144 HP / 128 SpA / 236 Spe  
Modest Nature  
- Dark Pulse  
- Heat Wave  
- Sucker Punch  
- Oblivion Wing  

Marshadow @ Focus Sash  
Ability: Technician  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Shadow Sneak  
- Spectral Thief  
- Close Combat  
- Endeavor  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 248 HP / 252 Def / 4 SpD / 4 Spe  
Impish Nature  
- Sacred Fire  
- Roost  
- Whirlwind  
- Defog  

Calyrex-Shadow @ Choice Scarf  
Ability: As One (Spectrier)  
EVs: 172 HP / 188 SpA / 148 Spe  
Modest Nature  
IVs: 0 Atk  
- Astral Barrage  
- Psychic  
- Future Sight  
- Trick