Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 240 HP / 240 Def / 28 Spe  
Impish Nature  
- Dragon Dance  
- Sunsteel Strike  
- Earthquake  
- Morning Sun  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 248 HP / 148 Def / 112 SpD  
Careful Nature  
IVs: 29 Spe  
- Foul Play  
- Roost  
- Defog  
- U-turn  

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

Eternatus @ Black Sludge  
Ability: Pressure  
EVs: 252 HP / 52 Def / 188 SpD / 16 Spe  
Timid Nature  
IVs: 0 Atk  
- Mystical Fire  
- Toxic  
- Dynamax Cannon  
- Recover  

Yveltal @ Black Glasses  
Ability: Dark Aura  
EVs: 228 Atk / 88 SpD / 192 Spe  
Jolly Nature  
- Knock Off  
- Sucker Punch  
- Hone Claws  
- Roost  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 244 HP / 216 Atk / 24 SpD / 24 Spe  
Careful Nature  
- Brave Bird  
- Thunder Wave  
- Sacred Fire  
- Defog