Don't use arrokuda (Arrokuda) @ Life Orb  
Ability: Swift Swim  
Level: 5  
Shiny: Yes  
Tera Type: Psychic  
EVs: 252 Atk / 228 Spe  
Adamant Nature  
IVs: 17 HP  
- Liquidation  
- Psychic Fangs  
- Flip Turn  
- Protect  

Voltorb-Hisui @ Damp Rock  
Ability: Static  
Level: 5  
Tera Type: Water  
EVs: 36 HP / 36 Def / 236 SpA / 196 Spe  
Timid Nature  
IVs: 0 Atk  
- Rain Dance  
- Leaf Storm  
- Volt Switch  
- Tera Blast  

Psyduck @ Eviolite  
Ability: Swift Swim  
Level: 5  
Tera Type: Electric  
EVs: 52 Def / 236 SpA / 36 SpD / 156 Spe  
Modest Nature  
IVs: 0 Atk  
- Nasty Plot  
- Surf  
- Ice Beam  
- Tera Blast  

Tinkatink @ Eject Button  
Ability: Mold Breaker  
Level: 5  
Tera Type: Ghost  
EVs: 36 HP / 156 Def / 84 SpD / 212 Spe  
Jolly Nature  
- Stealth Rock  
- Knock Off  
- Encore  
- Thunder Wave  

Mienfoo @ Eviolite  
Ability: Regenerator  
Level: 5  
Tera Type: Fairy  
EVs: 196 Def / 36 SpD / 236 Spe  
Jolly Nature  
- High Jump Kick  
- Knock Off  
- U-turn  
- Rain Dance  

Squirtle @ Oran Berry  
Ability: Rain Dish  
Level: 5  
Tera Type: Ghost  
EVs: 4 HP / 196 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Shell Smash  
- Water Spout  
- Surf  
- Ice Beam