Mew @ Leftovers  
Ability: Synchronize  
EVs: 252 HP / 4 Def / 252 SpD  
Serious Nature  
IVs: 0 Atk  
- Defog  
- Will-O-Wisp  
- Volt Switch  
- Soft-Boiled  / Knock Off

Clefable @ Leftovers  
Ability: Unaware  
EVs: 252 HP / 252 Def  
Bold Nature  
- Aromatherapy  
- Moonblast  
- Knock Off  
- Soft-Boiled  

Gastrodon @ Heavy-Duty Boots  
Ability: Sticky Hold  
EVs: 252 HP / 4 Def / 252 SpD  
Sassy Nature  
IVs: 0 Atk  
- Scald  
- Toxic  
- Recover  
- Protect  

Blissey (F) @ Heavy-Duty Boots  
Ability: Natural Cure  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
IVs: 0 Atk  
- Seismic Toss  
- Soft-Boiled  
- Toxic  
- Teleport  

Toxapex @ Rocky Helmet  
Ability: Regenerator  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
- Knock Off  
- Recover  
- Haze  
- Toxic Spikes  

Corviknight @ Leftovers  
Ability: Pressure  
EVs: 252 HP / 4 Def / 252 SpD  
Careful Nature  
- Iron Head  
- Iron Defense  / U-turn
- Defog  
- Roost