Deoxys-Attack @ Choice Specs  
Ability: Psychic Surge  
Tera Type: Psychic  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Expanding Force  
- Psycho Boost  
- Shadow Ball  
- Grass Knot  

Arceus-Dark @ Dread Plate  
Ability: Unaware  
Tera Type: Dark  
EVs: 248 HP / 204 Def / 56 Spe  
Impish Nature  
- Foul Play  
- Recover  
- Will-O-Wisp  
- Dragon Tail  

Magearna @ Assault Vest  
Ability: Regenerator  
Tera Type: Steel  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk / 30 Spe  
- Fleur Cannon  
- Ice Beam  
- Flash Cannon  
- Volt Switch  

Ho-Oh @ Heavy-Duty Boots  
Ability: Magic Bounce  
Tera Type: Fire  
EVs: 248 HP / 160 Def / 100 Spe  
Impish Nature  
- Sacred Fire  
- Brave Bird  
- Recover  
- Whirlwind  

Groudon @ Leftovers  
Ability: Toxic Debris  
Tera Type: Ground  
EVs: 252 HP / 136 Atk / 100 SpD / 20 Spe  
Adamant Nature  
- Precipice Blades  
- Smack Down  
- Roar  
- Swords Dance  

Miraidon @ Choice Scarf  
Ability: Hadron Engine  
Tera Type: Electric  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Draco Meteor  
- Electro Drift  
- Overheat  
- U-turn