Ditto @ Choice Scarf  
Ability: Imposter  
Hidden Power: Fire  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
IVs: 30 Atk  
- Transform  

Arceus @ Earth Plate  
Ability: Multitype  
EVs: 248 HP / 224 Def / 36 Spe  
Bold Nature  
IVs: 0 Atk  
- Ice Beam  
- Judgment  
- Refresh  
- Recover  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 252 HP / 252 Def / 4 SpD  
Impish Nature  
- Sacred Fire  
- Defog  
- Toxic  
- Whirlwind  

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

Zygarde @ Leftovers  
Ability: Power Construct  
EVs: 16 HP / 220 Atk / 36 Def / 236 Spe  
Impish Nature  
- Thousand Arrows  
- Dragon Dance  
- Dragon Tail  
- Substitute  

Necrozma-Dusk-Mane @ Leftovers  
Ability: Prism Armor  
EVs: 252 HP / 252 Def / 4 SpD  
Impish Nature  
- Stealth Rock  
- Sunsteel Strike  
- Moonlight  
- Toxic