Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 HP / 144 Def / 100 SpD / 12 Spe  
Impish Nature  
- Stealth Rock  
- Stone Edge  
- Precipice Blades  
- Roar  

Groudon @ Red Orb  
Ability: Drought  
EVs: 4 Atk / 252 SpA / 252 Spe  
Naive Nature  
- Eruption  
- Swords Dance  
- Stone Edge  
- Precipice Blades  

Arceus (Arceus-Fairy) @ Pixie Plate  
Ability: Multitype  
EVs: 252 HP / 128 Def / 128 Spe  
Bold Nature  
IVs: 0 Atk  
- Will-O-Wisp  
- Calm Mind  
- Recover  
- Judgment  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 252 HP / 204 Def / 52 SpD  
Impish Nature  
- Toxic  
- Sacred Fire  
- Whirlwind  
- Defog  

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

Rayquaza-Mega @ Choice Scarf  
Ability: Delta Stream  
EVs: 252 Atk / 4 SpA / 252 Spe  
Lonely Nature  
- Dragon Ascent  
- V-create  
- Draco Meteor  
- Surf