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

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

Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 252 HP / 4 Atk / 252 Def  
Impish Nature  
- Sunsteel Strike  
- Moonlight  
- Stealth Rock  
- Earthquake  

Kyogre @ Leftovers  
Ability: Drizzle  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
IVs: 0 Atk  
- Scald  
- Calm Mind  
- Ice Beam  
- Rest  

Marshadow @ Choice Band  
Ability: Technician  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Spectral Thief  
- Close Combat  
- Ice Punch  
- Shadow Sneak  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 252 HP / 32 Atk / 224 SpD  
Adamant Nature  
- Knock Off  
- Roost  
- U-turn  
- Defog