Coin flip (Kyogre-Primal) @ Life Orb  
Ability: Magic Guard  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Wave Crash  
- Headlong Rush  
- Wood Hammer  
- Shift Gear  

Ho-Oh @ Heavy-Duty Boots  
Ability: Desolate Land  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Topsy-Turvy  
- Strength Sap  
- Bitter Blade  
- Mortal Spin  

Celesteela @ Covert Cloak  
Ability: Well-Baked Body  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Impish Nature  
- Spikes  
- Strength Sap  
- Teleport  
- Knock Off  

Arceus-Ghost @ Spooky Plate  
Ability: Magic Bounce  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Take Heart  
- Strength Sap  
- Judgment  
- Secret Sword  

Eternatus @ Choice Scarf  
Ability: Dragon's Maw  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Dragon Energy  
- Volt Switch  
- Trick  
- Final Gambit  

Zacian @ Leftovers  
Ability: Ice Scales  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Careful Nature  
- Recover  
- Spirit Break  
- Knock Off  
- Salt Cure