Toxapex @ Shed Shell  
Ability: Regenerator  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
IVs: 0 Atk  
- Toxic Spikes  
- Haze  
- Recover  
- Scald  

Quagsire @ Leftovers  
Ability: Unaware  
EVs: 248 HP / 8 Def / 252 SpD  
Careful Nature  
- Curse  
- Liquidation  
- Earthquake  
- Recover  

Ditto @ Choice Scarf  
Ability: Imposter  
EVs: 248 HP / 8 Atk / 252 Def  
Impish Nature  
IVs: 0 Atk  
- Transform  

Mandibuzz (F) @ Heavy-Duty Boots  
Ability: Overcoat  
EVs: 248 HP / 8 Def / 252 SpD  
Careful Nature  
- Toxic  
- Roost  
- Knock Off  
- Foul Play  

Corviknight @ Leftovers  
Ability: Pressure  
EVs: 248 HP / 180 SpD / 80 Spe  
Careful Nature  
- Substitute  
- Roost  
- Brave Bird  
- Defog  

Sylveon @ Leftovers  
Ability: Pixilate  
EVs: 248 HP / 244 Def / 16 SpD  
Calm Nature  
IVs: 0 Atk  
- Hyper Voice  
- Wish  
- Protect  
- Calm Mind