Swampert @ Rocky Helmet / Leftovers
Ability: Regenerator  
EVs: 252 HP / 252 Def / 4 SpD    
Relaxed Nature  
IVs: 0 Spe  
- Flip Turn  
- Stealth Rock  
- Earthquake  
- Toxic / Whirlpool / Roar  

Swampert @ Assault Vest / Leftovers 
Ability: Regenerator  
EVs: 252 HP / 4 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Flip Turn  
- Earthquake  
- Stone Edge / Rock Slide / Stealth Rock 
- Whirlpool / Toxic / Ice Punch