Rotom-C @ Leftovers
EVs: 252 HP / 4 Def / 252 SDef
Calm Nature (+SDef, -Atk)
- Pain Split
- Leaf Storm
Actually a set I got from Smogon, works great.
The EVs make him specially bulky, while Willo Wisp immediatly cuts down Physical attackers, crippling then for the rest of the battle assuming they down have a Heal Bell or Aromatherapy'er.
Pain Split is for when the next threat comes in and you've taken some damage, you can pull your Hp back up to par with theirs and take them down.
Thunderbolt hits hard with STAB, and doesn't have stat drops.
While Leaf Storm is his incredibly hard hitting STAB move, but he really can't attack after using it.