Specially Defensive Pivot (Swampert) @ Leftovers
Ability: Regenerator
EVs: 252 HP / 4 Def / 252 SpD
Sassy Nature 
IVs: 0 Spe
- Flip Turn
- Stealth Rock / Spikes
- Thousand Waves / Scorching Sands / Precipice Blades
- Scald / Toxic / Whirlpool / Yawn / Roar

Physically Defensive Pivot (Swampert) @ Leftovers / Rocky Helmet
Ability: Regenerator / Intimidate
EVs:  252 HP / 252 Def / 4 SpD
Relaxed Nature
IVs: 0 Spe
- Flip Turn
- Stealth Rock / Spikes
- Thousand Waves / Scorching Sands / Precipice Blades
- Scald / Shore Up / Toxic / Whirlpool / Yawn / Roar

RegenVest (Swampert) @ Assault Vest
Ability: Regenerator
EVs: 252 HP / 4 Def / 252 SpD
Sassy Nature
IVs: 0 Spe
- Flip Turn
- Scorching Sands / Thousand Waves
- Mirror Coat
- Scald / Ice Beam / Counter