Arceus-Dark @ Dread Plate  
Ability: Multitype  
EVs: 252 HP / 240 SpD / 16 Spe  
Calm Nature  
IVs: 0 Atk  
- Perish Song  
- Recover  
- Judgment  
- Refresh  

Ditto @ Choice Scarf  
Ability: Imposter  
EVs: 248 HP / 8 Atk / 252 Def  
Impish Nature  
- Transform  

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

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 252 HP / 204 Def / 52 SpD  
Impish Nature  
- Sacred Fire  
- Whirlwind  
- Toxic  
- Defog  

Calyrex-Shadow @ Leftovers  
Ability: As One (Spectrier)  
EVs: 4 HP / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Nasty Plot  
- Astral Barrage  
- Substitute  
- Leech Seed  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 248 HP / 36 Def / 192 SpD / 32 Spe  
Careful Nature  
- Swords Dance  
- Precipice Blades  
- Rock Tomb  
- Rest