MXG (Rayquaza-Mega) @ Choice Band  
Ability: Delta Stream  
EVs: 252 Atk / 4 Def / 252 Spe  
Adamant Nature  
- Dragon Ascent  
- Draco Meteor  
- Extreme Speed  
- V-create  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 248 HP / 208 Def / 52 SpD  
Impish Nature  
- Sacred Fire  
- Whirlwind  
- Toxic  
- Brave Bird  

Necrozma-Dusk-Mane @ Leftovers  
Ability: Prism Armor  
EVs: 252 HP / 252 Def / 4 SpD  
Impish Nature  
- Stealth Rock  
- Toxic  
- Morning Sun  
- Sunsteel Strike  

Arceus-Ground @ Earth Plate  
Ability: Multitype  
EVs: 248 HP / 244 Def / 16 Spe  
Bold Nature  
IVs: 0 Atk  
- Recover  
- Defog  
- Judgment  
- Ice Beam  

Kyogre @ Choice Specs  
Ability: Drizzle  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Water Spout  
- Rest  
- Ice Beam  
- Origin Pulse  

Arceus-Fire @ Firium Z  
Ability: Multitype  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
IVs: 0 Atk  
- Refresh  
- Recover  
- Defog  
- Magic Coat