Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 248 HP / 192 Atk / 52 SpD / 16 Spe  
Adamant Nature  
- Sacred Fire  
- Brave Bird  
- Thunder Wave  
- Whirlwind  

Groudon @ Leftovers  
Ability: Drought  
EVs: 252 HP / 136 Def / 104 SpD / 16 Spe  
Impish Nature  
- Stealth Rock  
- Precipice Blades  
- Toxic  
- Rock Tomb  

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

Necrozma-Dusk-Mane @ Leftovers  
Ability: Prism Armor  
EVs: 248 HP / 200 Def / 60 Spe  
Impish Nature  
- Dragon Dance  
- Sunsteel Strike  
- Morning Sun  
- Earthquake  

Eternatus @ Heavy-Duty Boots  
Ability: Pressure  
EVs: 252 HP / 164 SpD / 92 Spe  
Timid Nature  
- Dynamax Cannon  
- Light Screen  
- Dragon Tail  
- Recover  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 48 HP / 4 Def / 204 SpD / 252 Spe  
Jolly Nature  
- Defog  
- Knock Off  
- Roost  
- Taunt