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

Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 252 HP / 132 Def / 124 Spe  
Bold Nature  
IVs: 0 Atk  
- Calm Mind  
- Recover  
- Refresh  
- Judgment  

Rayquaza-Mega @ Choice Band  
Ability: Delta Stream  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Dragon Ascent  
- Extreme Speed  
- V-create  
- Outrage  

Necrozma-Dusk-Mane @ Heavy-Duty Boots  
Ability: Prism Armor  
EVs: 252 HP / 4 Atk / 252 Def  
Impish Nature  
- Sunsteel Strike  
- Toxic  
- Moonlight  
- Stealth Rock  

Arceus-Dark @ Dread Plate  
Ability: Multitype  
EVs: 252 HP / 232 SpD / 24 Spe  
Calm Nature  
IVs: 0 Atk  
- Judgment  
- Whirlpool  
- Perish Song  
- Recover  

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