Zacian @ Leftovers  
Ability: Intrepid Sword  
EVs: 104 HP / 252 Atk / 152 Spe  
Adamant Nature  
- Substitute  
- Play Rough  
- Protect  
- Crunch  

Xerneas @ Power Herb  
Ability: Fairy Aura  
EVs: 84 HP / 252 Def / 120 SpA / 52 Spe  
Modest Nature  
IVs: 0 Atk  
- Geomancy  
- Moonblast  
- Rest  
- Sleep Talk  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 248 HP / 16 Atk / 244 SpD  
Careful Nature  
- Knock Off  
- Roost  
- U-turn  
- Defog  

Necrozma-Dusk-Mane @ Leftovers  
Ability: Prism Armor  
EVs: 244 HP / 252 Def / 12 Spe  
Impish Nature  
- Sunsteel Strike  
- Moonlight  
- Earthquake  
- Dragon Dance  

Groudon @ Leftovers  
Ability: Drought  
EVs: 248 HP / 64 Atk / 36 Def / 144 SpD / 16 Spe  
Careful Nature  
- Stone Edge  
- Thunder Wave  
- Precipice Blades  
- Stealth Rock  

Eternatus @ Heavy-Duty Boots  
Ability: Pressure  
EVs: 232 HP / 252 SpD / 24 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Recover  
- Flamethrower  
- Sludge Bomb