Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 244 HP / 164 Def / 100 Spe  
Timid Nature  
IVs: 0 Atk  
- Calm Mind  
- Judgment  
- Refresh  
- Recover  

Ditto @ Choice Scarf  
Ability: Imposter  
EVs: 248 HP / 252 Def / 8 SpD  
Relaxed Nature  
IVs: 30 Atk / 0 Spe  
- Transform  

Eternatus @ Life Orb  
Ability: Pressure  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Flamethrower  
- Toxic  
- Recover  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 HP / 80 Def / 164 SpD / 12 Spe  
Impish Nature  
- Stealth Rock  
- Stone Edge  
- Precipice Blades  
- Toxic  

Rayquaza-Mega @ Life Orb  
Ability: Air Lock  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Dragon Ascent  
- Extreme Speed  
- Earthquake  
- Dragon Dance  

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