Magearna @ Leftovers  
Ability: Soul-Heart  
Tera Type: Dragon  
EVs: 252 HP / 108 SpA / 148 Spe  
Modest Nature  
IVs: 0 Atk  
- Protect  
- Substitute  
- Dazzling Gleam  
- Flash Cannon  

Rillaboom @ Assault Vest  
Ability: Grassy Surge  
Tera Type: Fire  
EVs: 252 HP / 200 Def / 56 SpD  
Impish Nature  
- Fake Out  
- Grassy Glide  
- Knock Off  
- U-turn  

Groudon @ Assault Vest  
Ability: Drought  
Tera Type: Fire  
EVs: 252 HP / 12 Atk / 204 SpD / 40 Spe  
Brave Nature  
- Precipice Blades  
- Brick Break  
- Overheat  
- High Horsepower  

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

Calyrex-Ice @ Sitrus Berry  
Ability: As One (Glastrier)  
Tera Type: Water  
EVs: 248 HP / 252 Atk / 8 SpD  
Brave Nature  
IVs: 0 Spe  
- Protect  
- Glacial Lance  
- High Horsepower  
- Trick Room  

Arceus-Water @ Splash Plate  
Ability: Multitype  
Tera Type: Ghost  
EVs: 240 HP / 20 Def / 236 SpD / 12 Spe  
Calm Nature  
IVs: 0 Atk  
- Judgment  
- Foul Play  
- Tailwind  
- Recover