Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 244 HP / 252 Def / 12 Spe  
Impish Nature  
- Stealth Rock  
- Sunsteel Strike  
- Morning Sun  
- Toxic  

Eternatus @ Shuca Berry  
Ability: Pressure  
EVs: 248 HP / 16 Def / 152 SpD / 92 Spe  
Timid Nature  
IVs: 0 Atk  
- Recover  
- Toxic  
- Dynamax Cannon  
- Mystical Fire  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 248 HP / 252 SpD / 8 Spe  
Careful Nature  
- Foul Play  
- Sucker Punch  
- Defog  
- Roost  

Zekrom @ Leftovers  
Ability: Teravolt  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Dragon Dance  
- Bolt Strike  
- Dragon Claw  
- Substitute  

Groudon @ Lum Berry  
Ability: Drought  
EVs: 128 HP / 252 Atk / 12 SpD / 116 Spe  
Adamant Nature  
- Swords Dance  
- Precipice Blades  
- Stone Edge  
- Rock Polish  

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