Ferrothorn @ Leftovers  
Ability: Iron Barbs  
EVs: 252 HP / 4 Def / 252 SpD  
Careful Nature  
- Stealth Rock  
- Knock Off  
- Curse  
- Leech Seed  

Groudon @ Leftovers  
Ability: Drought  
EVs: 248 HP / 108 Atk / 152 Spe  
Adamant Nature  
- Swords Dance  
- Precipice Blades  
- Heat Crash  
- Rock Tomb  

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  

Necrozma-Dusk-Mane @ Colbur Berry  
Ability: Prism Armor  
EVs: 252 HP / 136 SpD / 120 Spe  
Careful Nature  
- Dragon Dance  
- Sunsteel Strike  
- Knock Off  
- Moonlight  

Eternatus @ Air Balloon  
Ability: Pressure  
EVs: 248 HP / 44 Def / 216 Spe  
Timid Nature  
IVs: 0 Atk  
- Draco Meteor  
- Flamethrower  
- Toxic  
- Recover  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 248 HP / 112 Def / 68 SpD / 80 Spe  
Careful Nature  
- Knock Off  
- Foul Play  
- Roost  
- Defog