Ditto @ Choice Scarf  
Ability: Imposter  
EVs: 252 HP / 252 Def / 4 Spe  
Bold Nature  
- Transform  

Zacian-Crowned @ Rusted Sword  
Ability: Intrepid Sword  
EVs: 4 HP / 252 Atk / 252 Spe  
Adamant Nature  
- Behemoth Blade  
- Wild Charge  
- Close Combat  
- Assurance  

Ditto @ Heavy-Duty Boots  
Ability: Imposter  
EVs: 252 HP / 252 Def / 4 Spe  
Bold Nature  
- Transform  

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

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 112 HP / 4 Def / 140 SpD / 252 Spe  
Jolly Nature  
- Knock Off  
- U-turn  
- Taunt  
- Roost  

Kyogre @ Leftovers  
Ability: Drizzle  
EVs: 252 HP / 252 Def / 4 SpA  
Calm Nature  
IVs: 0 Atk  
- Scald  
- Ice Beam  
- Rest  
- Calm Mind