Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 248 HP / 108 Atk / 68 Def / 40 SpD / 44 Spe  
Adamant Nature  
- Swords Dance  
- Precipice Blades  
- Heat Crash  
- Rock Tomb  

Giratina-Origin @ Griseous Core  
Ability: Levitate  
Tera Type: Poison  
EVs: 248 HP / 68 Atk / 192 Def  
Impish Nature  
- Poltergeist  
- Dragon Tail  
- Defog  
- Toxic  

Arceus-Dark @ Dread Plate  
Ability: Multitype  
IVs: 0 Atk  
- Foul Play  
- Stealth Rock  
- Toxic  

Zygarde  
Ability: Power Construct  
IVs: 0 Atk  

Garganacl @ Leftovers  
Ability: Purifying Salt  
EVs: 248 HP / 56 Def / 204 SpD  
Impish Nature  
IVs: 0 Spe  
- Salt Cure  
- Recover  
- Iron Defense  
- Body Press  

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