Necrozma-Dusk-Mane @ Leftovers  
Ability: Prism Armor  
EVs: 236 HP / 240 Def / 32 Spe  
Impish Nature  
- Dragon Dance  
- Morning Sun  
- Earthquake  
- Sunsteel Strike  

Groudon @ Leftovers  
Ability: Drought  
EVs: 252 HP / 252 Def / 4 SpD  
Impish Nature  
- Stealth Rock  
- Precipice Blades  
- Stone Edge  
- Thunder Wave  

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

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 224 HP / 32 Atk / 252 SpD  
Adamant Nature  
IVs: 28 Spe  
- Knock Off  
- U-turn  
- Taunt  
- Roost  

Calyrex-Shadow @ Choice Specs  
Ability: As One (Spectrier)  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Astral Barrage  
- Psyshock  
- Trick  
- Aromatherapy  

Eternatus @ Expert Belt  
Ability: Pressure  
EVs: 40 HP / 152 SpA / 252 SpD / 64 Spe  
Modest Nature  
IVs: 0 Atk  
- Sludge Bomb  
- Draco Meteor  
- Flamethrower  
- Recover