Swampert-Mega @ Swampertite  
Ability: Swift Swim  
Tera Type: Water  
EVs: 148 HP / 252 Atk / 108 Spe  
Adamant Nature  
- Aqua Tail  
- High Horsepower  
- Ice Punch  
- Protect  

Pelipper @ Eject Button  
Ability: Drizzle  
Tera Type: Water  
EVs: 248 HP / 216 Def / 44 Spe  
Bold Nature  
IVs: 0 Atk  
- Weather Ball  
- Helping Hand  
- Tailwind  
- Hurricane  

Dracovish @ Choice Scarf  
Ability: Strong Jaw  
Tera Type: Water  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Fishious Rend  
- Dragon Rush  
- Psychic Fangs  
- Facade  

Tapu Fini @ Leftovers  
Ability: Misty Surge  
Tera Type: Dragon  
EVs: 244 HP / 48 Def / 160 SpA / 56 Spe  
Bold Nature  
IVs: 0 Atk  
- Calm Mind  
- Muddy Water  
- Protect  
- Moonblast  

Ludicolo @ Assault Vest  
Ability: Swift Swim  
Tera Type: Water  
EVs: 148 HP / 252 SpA / 108 Spe  
Modest Nature  
- Giga Drain  
- Muddy Water  
- Fake Out  
- Ice Beam  

Basculegion (M) @ Life Orb  
Ability: Swift Swim  
Tera Type: Water  
EVs: 212 HP / 252 Atk / 44 Spe  
Adamant Nature  
- Wave Crash  
- Last Respects  
- Flip Turn  
- Protect