Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 252 HP / 224 Def / 32 Spe  
Impish Nature  
- Stealth Rock  
- Thunder Wave  
- Sunsteel Strike  
- Morning Sun  

Xerneas @ Air Balloon  
Ability: Fairy Aura  
Shiny: Yes  
EVs: 248 HP / 252 Def / 8 SpA  
Bold Nature  
IVs: 0 Atk  
- Moonblast  
- Aromatherapy  
- Rest  
- Sleep Talk  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 248 HP / 68 SpD / 192 Spe  
Jolly Nature  
- Knock Off  
- Taunt  
- Defog  
- Roost  

Zygarde @ Life Orb  
Ability: Power Construct  
EVs: 24 HP / 252 Atk / 232 Spe  
Adamant Nature  
- Dragon Dance  
- Thousand Arrows  
- Outrage  
- Rest  

Eternatus @ Heavy-Duty Boots  
Ability: Pressure  
EVs: 252 HP / 164 SpD / 92 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Toxic  
- Recover  
- Mystical Fire  

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