Calyrex-Ice @ Weakness Policy  
Ability: Tinted Lens  
EVs: 248 HP / 252 Atk / 8 SpD  
Brave Nature  
IVs: 0 Spe  
- Trick Room  
- Glacial Lance  
- High Horsepower  
- Swords Dance  

Yveltal @ Assault Vest  
Ability: Regenerator  
EVs: 248 HP / 8 Atk / 252 SpD  
Sassy Nature  
- Foul Play  
- U-turn  
- Knock Off  
- Heat Wave  

Eternatus @ Black Sludge  
Ability: Unaware  
EVs: 252 HP / 252 Def / 4 SpA  
Bold Nature  
IVs: 0 Atk  
- Toxic Spikes  
- Flamethrower  
- Dynamax Cannon  
- Recover  

Lugia @ Heavy-Duty Boots  
Ability: Magic Bounce  
EVs: 248 HP / 8 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Toxic  
- Defog  
- Roost  
- Ice Beam  

Necrozma-Dusk-Mane @ Weakness Policy  
Ability: Tinted Lens  
EVs: 252 HP / 136 Def / 120 Spe  
Impish Nature  
- Dragon Dance  
- Sunsteel Strike  
- Morning Sun  
- Earthquake  

Regigigas @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Power-Up Punch  
- Knock Off  
- Facade  
- Substitute