Ferrothorn @ Leftovers  
Ability: Iron Barbs  
EVs: 252 HP / 252 Def / 4 SpD  
Impish Nature  
IVs: 0 Atk  
- Iron Defense  
- Body Press  
- Leech Seed  
- Spikes  

Eternatus @ Black Sludge  
Ability: Pressure  
EVs: 252 HP / 240 SpD / 16 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Flamethrower  
- Toxic Spikes  
- Recover  

Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 252 HP / 228 Def / 4 SpD / 24 Spe  
Impish Nature  
- Stealth Rock  
- Sunsteel Strike  
- Toxic  
- Morning Sun  

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

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 252 HP / 4 Def / 240 SpD / 12 Spe  
Careful Nature  
- Knock Off  
- Defog  
- Sucker Punch  
- Roost  

Kyogre @ Leftovers  
Ability: Drizzle  
EVs: 248 HP / 244 Def / 16 Spe  
Bold Nature  
IVs: 0 Atk  
- Calm Mind  
- Scald  
- Block  
- Rest