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

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 252 HP / 4 Atk / 252 SpD  
Careful Nature  
- Sucker Punch  
- Foul Play  
- Roost  
- Defog  

Marshadow @ Focus Sash  
Ability: Technician  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Spectral Thief  
- Close Combat  
- Rock Tomb  
- Shadow Sneak  

Necrozma-Dusk-Mane @ Leftovers  
Ability: Prism Armor  
EVs: 252 HP / 4 Atk / 252 Def  
Impish Nature  
- Stealth Rock  
- Sunsteel Strike  
- Thunder Wave  
- Morning Sun  

Zygarde @ Leftovers  
Ability: Power Construct  
EVs: 252 HP / 4 Def / 252 SpD  
Careful Nature  
- Coil  
- Thousand Arrows  
- Rest  
- Glare  

Eternatus @ Black Sludge  
Ability: Pressure  
EVs: 252 HP / 200 Def / 56 Spe  
Timid Nature  
- Dynamax Cannon  
- Flamethrower  
- Toxic  
- Recover