Calyrex-Shadow @ Life Orb  
Ability: As One (Spectrier)  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Astral Barrage  
- Psyshock / Substitute  
- Draining Kiss  
- Nasty Plot  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 252 HP / 204 Def / 52 SpD  
Impish Nature  
- Sacred Fire  
- Whirlwind / Recover  
- Toxic  
- Defog  

Necrozma-Dusk-Mane @ Leftovers / Rocky Helmet / Heavy-Duty-Boots  
Ability: Prism Armor  
EVs: 252 HP / 252 Def / 4 SpD  
Impish Nature  
- Sunsteel Strike  
- Earthquake / Knock Off  
- Moonlight  
- Toxic / Stealth Rock  

Eternatus @ Black Sludge  
Ability: Pressure  
EVs: 252 HP / 40 SpD / 216 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Flamethrower  
- Recover  
- Toxic  

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

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 248 HP / 8 Def / 252 SpD  
Careful Nature  
- Sucker Punch  
- Roost  
- Knock Off / Foul Play  
- uturn / snarl / defog / taunt