Kyogre-Primal @ Blue Orb  
Ability: Primordial Sea  
EVs: 248 HP / 36 Def / 160 SpA / 64 Spe  
Modest Nature  
IVs: 0 Atk  
- Rest  
- Calm Mind  
- Origin Pulse  
- Ice Beam  

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

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

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 248 HP / 192 Def / 52 SpD / 16 Spe  
Impish Nature  
- Sacred Fire  
- Toxic  
- Whirlwind  
- Defog  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 HP / 36 Def / 220 SpD  
Careful Nature  
- Stealth Rock  
- Precipice Blades  
- Stone Edge  
- Toxic  

Arceus-Ground @ Earth Plate  
Ability: Multitype  
EVs: 252 HP / 240 Def / 16 Spe  
Bold Nature  
IVs: 0 Atk  
- Judgment  
- Ice Beam  
- Recover  
- Toxic