Groudon @ Red Orb  
Ability: Drought  
Tera Type: Flying  
EVs: 248 HP / 56 Def / 152 SpD / 52 Spe  
Impish Nature  
- Heat Crash  
- Earthquake  
- Rock Tomb  
- Stealth Rock  

Arceus @ Silk Scarf  
Ability: Multitype  
Tera Type: Normal  
EVs: 120 HP / 252 Atk / 136 Spe  
Adamant Nature  
- Swords Dance  
- Shadow Claw  
- Taunt  
- Extreme Speed  

Eternatus @ Mirror Herb  
Ability: Pressure  
Tera Type: Ghost  
EVs: 252 SpA / 40 SpD / 216 Spe  
Timid Nature  
IVs: 0 Atk  
- Sludge Bomb  
- Recover  
- Flamethrower  
- Dynamax Cannon  

Hatterene @ Custap Berry  
Ability: Magic Bounce  
Tera Type: Flying  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
- Endure  
- Nuzzle  
- Mystical Fire  
- Healing Wish  

Kyogre @ Blue Orb  
Ability: Drizzle  
Tera Type: Water  
EVs: 248 HP / 208 Def / 52 Spe  
Bold Nature  
IVs: 0 Atk  
- Scald  
- Ice Beam  
- Rest  
- Sleep Talk  

Calyrex-Ice @ Heavy-Duty Boots  
Ability: As One (Glastrier)  
Tera Type: Steel  
EVs: 248 HP / 252 Atk / 8 SpD  
Adamant Nature  
IVs: 30 Spe  
- Glacial Lance  
- Swords Dance  
- High Horsepower  
- Trick Room