Use a Gatorsmash maul for PvP for now. When you are grouping you can switch out Gator for a wis/resist combo such as Paw and Crested MM Shield or Sharkbone Hammer and Testament of Vanear. The Gator maul hits like a beast especially at lower levels when casters have such shit HP.
http://wiki.project1999.org/index.php/Shaman#Pre-Planar
You can consult this link for starters.