Rayquaza @ Choice Band  
Ability: Air Lock  
EVs: 252 Atk / 4 Def / 252 Spe  
Adamant Nature  
- Scale Shot  
- Dragon Ascent  
- V-create  
- Extreme Speed  

Ferrothorn @ Leftovers  
Ability: Iron Barbs  
EVs: 248 HP / 8 Def / 252 SpD  
Careful Nature  
- Spikes  
- Power Whip  
- Protect  
- Leech Seed  

Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 244 HP / 252 Def / 12 Spe  
Impish Nature  
- Thunder Wave  
- Moonlight  
- Iron Head  
- Stealth Rock  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 200 HP / 8 Def / 48 SpD / 252 Spe  
Jolly Nature  
- Taunt  
- Foul Play  
- Roost  
- Knock Off  

Eternatus @ Life Orb  
Ability: Pressure  
EVs: 48 HP / 32 Def / 244 SpA / 184 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Recover  
- Sludge Bomb  
- Flamethrower  

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