Primarina @ Custap Berry  
Ability: Torrent  
Tera Type: Water  
EVs: 240 HP / 152 Def / 104 SpA / 12 Spe  
Modest Nature  
IVs: 0 Atk  
- Hydro Cannon  
- Moonblast  
- Endure  
- Calm Mind / Encore  

Volcanion @ Choice Specs  
Ability: Water Absorb  
Tera Type: Fire  
EVs: 240 HP / 108 Def / 144 SpA / 16 SpD  
Modest Nature  
IVs: 0 Atk  
- Overheat  
- Steam Eruption  
- Sludge Wave  
- Flamethrower / Earth Power  

Swampert @ Assault Vest  
Ability: Torrent  
Tera Type: Fire  
EVs: 248 HP / 100 Def / 160 SpD  
Relaxed Nature  
- Mirror Coat  
- Hydro Cannon /  Ice Punch  
- Earthquake  
- Counter