Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 248 HP / 252 Def / 8 Spe  
Impish Nature  
- Morning Sun  
- Stealth Rock  
- Knock Off  
- Sunsteel Strike  

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

Groudon @ Life Orb  
Ability: Drought  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Swords Dance  
- Precipice Blades  
- Aerial Ace  
- Stone Edge  

Ditto @ Choice Scarf  
Ability: Imposter  
EVs: 252 HP / 4 Atk / 252 Def  
Impish Nature  
IVs: 30 Atk  
- Transform