Ferrothorn @ Leftovers / Rocky Helmet
Ability: Regenerator 
EVs: 252 HP / 252 Def / 4 SpD  
Impish Nature  
- Knock Off 
- Power Whip / Body Press
- Spikes / Stealth Rock  
- Swords Dance / Iron Defense / Leech Seed  

Ferrothorn @ Chople Berry / Leftovers  
Ability: Regenerator 
EVs: 252 HP / 4 Def / 252 SpD
Careful Nature  
- Knock Off 
- Power Whip 
- Spikes / Stealth Rock  
- Gyro Ball / Swords Dance / Stealth Rock