Marshadow @ Life Orb  
Ability: Technician  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Poltergeist  
- Close Combat  
- Shadow Sneak  
- Ice Punch  

Kyogre @ Choice Specs  
Ability: Drizzle  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Water Spout  
- Origin Pulse  
- Thunder  
- Ice Beam  

Eternatus @ Black Sludge  
Ability: Pressure  
EVs: 168 HP / 248 SpD / 92 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Mystical Fire  
- Toxic  
- Recover  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 248 HP / 32 Atk / 8 Def / 220 SpD  
Adamant Nature  
- Foul Play  
- U-turn  
- Defog  
- Roost  

Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 244 HP / 252 Def / 12 Spe  
Impish Nature  
- Stealth Rock  
- Sunsteel Strike  
- Knock Off  
- Moonlight  

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