Rayquaza-Mega @ Choice Band  
Ability: Delta Stream  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Ascent  
- Earthquake  
- Aqua Tail  
- V-create  

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

Shedinja @ Heavy-Duty Boots  
Ability: Wonder Guard  
Shiny: Yes  
EVs: 252 Atk / 4 Def / 252 Spe  
Adamant Nature  
- Protect  
- Swords Dance  
- X-Scissor  
- Poltergeist  

Kyogre-Primal @ Blue Orb  
Ability: Primordial Sea  
EVs: 252 HP / 252 Def / 4 SpD  
Relaxed Nature  
IVs: 0 Atk  
- Origin Pulse  
- Thunder  
- Ice Beam  
- Rest  

Arceus-Dark @ Dread Plate  
Ability: Multitype  
EVs: 252 HP / 4 SpA / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Calm Mind  
- Judgment  
- Recover  
- Refresh  

Zacian-Crowned @ Rusted Sword  
Ability: Intrepid Sword  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Behemoth Blade  
- Close Combat  
- Wild Charge  
- Substitute