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

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

Kyogre @ Leftovers  
Ability: Drizzle  
EVs: 252 HP / 240 Def / 16 Spe  
Bold Nature  
IVs: 0 Atk  
- Scald  
- Calm Mind  
- Rest  
- Roar  

Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 252 HP / 224 Def / 32 Spe  
Impish Nature  
- Sunsteel Strike  
- Morning Sun  
- Dragon Dance  
- Knock Off  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 252 HP / 64 SpD / 192 Spe  
Jolly Nature  
- Foul Play  
- Roost  
- U-turn  
- Defog  

Groudon @ Leftovers  
Ability: Drought  
EVs: 252 HP / 108 Atk / 132 Def / 16 Spe  
Impish Nature  
- Precipice Blades  
- Swords Dance  
- Stone Edge  
- Stealth Rock