Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 248 HP / 252 Def / 8 SpD  
Impish Nature  
- Whirlwind  
- Defog  
- Toxic  
- Sacred Fire  

Eternatus @ Rocky Helmet  
Ability: Pressure  
EVs: 252 HP / 124 Def / 132 Spe  
Bold Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Flamethrower  
- Toxic Spikes  
- Recover  

Blissey (F) @ Heavy-Duty Boots  
Ability: Natural Cure  
EVs: 252 HP / 252 Def / 4 SpA  
Bold Nature  
- Soft-Boiled  
- Shadow Ball  
- Toxic  
- Seismic Toss  

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

Lugia @ Heavy-Duty Boots  
Ability: Multiscale  
EVs: 248 HP / 84 Def / 176 Spe  
Timid Nature  
IVs: 0 Atk  
- Recover  
- Ice Beam  
- Whirlwind  
- Toxic  

Ditto @ Choice Scarf  
Ability: Imposter  
EVs: 252 HP / 4 Atk / 252 Def  
Relaxed Nature  
IVs: 0 Spe  
- Transform