Groudon @ Leftovers  
Ability: Drought  
EVs: 216 HP / 252 Atk / 40 Spe  
Adamant Nature  
- Precipice Blades  
- Stone Edge  
- Swords Dance  
- Heat Crash  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 16 HP / 240 SpD / 252 Spe  
Jolly Nature  
- Roost  
- Foul Play  
- Sucker Punch  
- Defog  

Necrozma-Dusk-Mane @ Leftovers  
Ability: Prism Armor  
EVs: 252 HP / 252 SpD / 4 Spe  
Careful Nature  
- Stealth Rock  
- Moonlight  
- Iron Head  
- Thunder Wave  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 252 HP / 200 Atk / 40 Def / 16 Spe  
Adamant Nature  
- Brave Bird  
- Sacred Fire  
- Earthquake  
- Thunder Wave  

Eternatus @ Black Sludge  
Ability: Pressure  
EVs: 172 HP / 236 SpD / 100 Spe  
Timid Nature  
- Dynamax Cannon  
- Flamethrower  
- Recover  
- Dragon Tail  

Calyrex-Shadow @ Choice Specs  
Ability: As One (Spectrier)  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Astral Barrage  
- Psyshock  
- Trick  
- Aromatherapy