...B-but I still use Skuntank... ;A;
If you want something with the same typing but objectively better, look into Drapion? You do already have a Dark-type in Scrafty, though, hmm...
If you want another Poison-type, though it's not my place to say, you can look into Nidoking (with Sheer Force and Sludge Wave/Poison Jab, but then again you also already have a Ground-type), Crobat or Scolipede (Speed Boost and Baton Pass are quite handy), off the top of my head.
If it's something else you want, though? You are much better off asking someone else. I can offer (some) moveset advice, but team advice is not my forte.