Groudon @ Leftovers  
Ability: Drought  
EVs: 236 HP / 100 Atk / 148 Def / 24 Spe  
Impish Nature  
- Thunder Wave  
- Swords Dance  
- Precipice Blades  
- Stone Edge  

Kyogre @ Leftovers  
Ability: Drizzle  
EVs: 232 HP / 252 Def / 24 Spe  
Bold Nature  
IVs: 0 Atk  
- Thunder Wave  
- Substitute  
- Calm Mind  
- Surf  

Xerneas @ Leftovers  
Ability: Fairy Aura  
EVs: 248 HP / 252 Def / 8 Spe  
Bold Nature  
IVs: 0 Atk  
- Thunder Wave  
- Moonblast  
- Rest  
- Aromatherapy  

Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 248 HP / 248 Def / 12 Spe  
Impish Nature  
- Stealth Rock  
- Moonlight  
- Sunsteel Strike  
- Earthquake  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 248 HP / 8 Def / 252 SpD  
Careful Nature  
IVs: 24 Spe  
- Roost  
- Defog  
- Knock Off  
- U-turn  

Eternatus @ Leftovers  
Ability: Pressure  
EVs: 248 HP / 244 SpD / 16 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Recover  
- Flamethrower  
- Toxic