Greninja @ Choice Scarf  
Ability: Protean  
Tera Type: Water  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Dark Pulse  
- Sludge Wave  
- Ice Beam  
- Toxic Spikes  

Keldeo @ Choice Specs  
Ability: Justified  
Tera Type: Water  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Surf  
- Secret Sword  
- Vacuum Wave  
- Icy Wind  

Toxapex @ Heavy-Duty Boots  
Ability: Regenerator  
Tera Type: Poison  
EVs: 248 HP / 8 Atk / 252 Def  
Impish Nature  
- Poison Jab  
- Haze  
- Recover  
- Toxic  

Swampert @ Leftovers  
Ability: Torrent  
Tera Type: Water  
EVs: 252 HP / 4 Def / 252 SpD  
Careful Nature  
- Flip Turn  
- Earthquake  
- Knock Off  
- Stealth Rock  

Ogerpon-Wellspring (F) @ Wellspring Mask  
Ability: Water Absorb  
Tera Type: Water  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Horn Leech  
- Ivy Cudgel  
- Low Kick  
- Swords Dance  

Quaquaval @ Heavy-Duty Boots  
Ability: Moxie  
Tera Type: Water  
EVs: 252 HP / 32 Atk / 60 Def / 164 Spe  
Jolly Nature  
- Close Combat  
- Aqua Step  
- Rapid Spin  
- Roost