Groudon @ Leftovers  
Ability: Drought  
EVs: 180 HP / 252 Atk / 76 Spe  
Adamant Nature  
- Precipice Blades  
- Stone Edge  
- Heat Crash  
- Swords Dance  

Ho-Oh @ Choice Band  
Ability: Regenerator  
EVs: 248 HP / 208 Atk / 32 SpD / 20 Spe  
Adamant Nature  
- Sacred Fire  
- Brave Bird  
- Earthquake  
- Whirlwind  

Eternatus @ Heavy-Duty Boots  
Ability: Pressure  
EVs: 224 HP / 252 SpD / 32 Spe  
Timid Nature  
IVs: 0 Atk  
- Dragon Pulse  
- Mystical Fire  
- Toxic  
- Recover  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 248 HP / 76 Def / 184 SpD  
Careful Nature  
- Knock Off  
- Roost  
- Sucker Punch  
- Defog  

Xerneas @ Air Balloon  
Ability: Fairy Aura  
EVs: 248 HP / 252 Def / 8 Spe  
Bold Nature  
IVs: 0 Atk  
- Moonblast  
- Rest  
- Sleep Talk  
- Aromatherapy  

Necrozma-Dusk-Mane @ Leftovers  
Ability: Prism Armor  
EVs: 252 HP / 136 SpD / 120 Spe  
Careful Nature  
- Iron Head  
- Morning Sun  
- Stealth Rock  
- Thunder Wave