Ditto @ Choice Scarf  
Ability: Imposter  
EVs: 248 HP / 8 Atk / 252 Def  
Relaxed Nature  
IVs: 30 Atk / 0 Spe  
- Transform  

Eternatus @ Life Orb  
Ability: Pressure  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Flamethrower  
- Meteor Beam  
- Recover  

Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 252 HP / 188 Def / 64 SpD / 4 Spe  
Impish Nature  
- Stealth Rock  
- Toxic  
- Morning Sun  
- Sunsteel Strike  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 248 HP / 200 Def / 52 SpD / 8 Spe  
Careful Nature  
- Protect  
- Sacred Fire  
- Whirlwind  
- Defog  

Ferrothorn @ Leftovers  
Ability: Iron Barbs  
EVs: 252 HP / 252 SpD / 4 Spe  
Careful Nature  
- Spikes  
- Leech Seed  
- Knock Off  
- Protect  

Arceus-Dark @ Dread Plate  
Ability: Multitype  
EVs: 240 HP / 180 Def / 88 Spe  
Bold Nature  
IVs: 0 Atk  
- Judgment  
- Whirlpool  
- Recover  
- Perish Song