Necrozma-Dusk-Mane @ Rocky Helmet 
Ability: Prism Armor  
EVs: 252 HP / 224 Def / 32 Spe  
Impish Nature  
- Stealth Rock  
- Toxic  
- Sunsteel Strike  
- Moonlight  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 248 HP / 188 Def / 56 SpD / 16 Spe  
Impish Nature  
- Brave Bird  
- Sacred Fire  
- Defog  
- Thunder Wave  

Kyogre @ Leftovers  
Ability: Drizzle  
EVs: 248 HP / 100 Def / 160 Spe  
Timid Nature  
IVs: 0 Atk  
- Calm Mind  
- Scald  
- Thunder  
- Rest  

Eternatus @ Haban Berry  
Ability: Pressure  
EVs: 248 HP / 128 SpD / 132 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Toxic  
- Recover  
- Mystical Fire  

Yveltal @ Life Orb  
Ability: Dark Aura  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Dark Pulse  
- Oblivion Wing  
- Heat Wave  
- Taunt  

Ditto @ Choice Scarf  
Ability: Imposter  
EVs: 248 HP / 252 Def / 8 SpD  
Relaxed Nature  
IVs: 30 Atk / 0 Spe  
- Transform