Notes:

Rest
Power Split
Toxic/Infestation/Earth Power
Stone Edge/Earthquake

Nature: Relaxed or Sassy, with EV's in Hp and depending on what nature you pick, Def or Sp.Def. Ultimately it's how you prefer it, but for me I like balance, so if I have Relaxed then I put EV's in Sp.Def

A little alternative to the standard stalling Shuckle.