Hippowdon @ Rocky Helmet  
Ability: Sand Force  
EVs: 252 HP / 120 Def / 136 SpD  
Impish Nature  
- Earthquake  
- Slack Off  
- Stealth Rock  
- Toxic

Toxapex @ Black Sludge  
Ability: Regenerator  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Scald  
- Toxic  
- Baneful Bunker  
- Recover