Calyrex-Shadow @ Choice Specs  
Ability: As One (Spectrier)  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Astral Barrage  
- Future Sight  
- Trick  
- Aromatherapy  

Zamazenta-Crowned @ Rusted Shield  
Ability: Dauntless Shield  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Close Combat  
- Behemoth Bash  
- Howl  
- Rest  

Groudon @ Leftovers  
Ability: Drought  
EVs: 180 HP / 252 Atk / 76 Spe  
Adamant Nature  
- Bulk Up  
- Substitute  
- Precipice Blades  
- Stone Edge  

Necrozma-Dusk-Mane @ Leftovers  
Ability: Prism Armor  
EVs: 252 HP / 224 SpD / 32 Spe  
Careful Nature  
- Stealth Rock  
- Moonlight  
- Iron Head  
- Thunder Wave  

Eternatus @ Heavy-Duty Boots  
Ability: Pressure  
EVs: 164 HP / 252 SpD / 92 Spe  
Timid Nature  
IVs: 0 Atk  
- Recover  
- Toxic  
- Sludge Bomb  
- Dynamax Cannon  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 248 HP / 72 Atk / 188 SpD  
Careful Nature  
- Knock Off  
- U-turn  
- Defog  
- Roost