They are a bit stronger than Trolls and Frost Trolls and they can poison you, but they are not immune to earth themselves which means Druids with Snakebite Rods or Terra Rods are able kill them rather easily, although not recomended for level 13- Druids. After the 8.2 summer update they now drop Spears as loot which makes them a good choice for low level Paladins to exp on.
Just attack them, there's no big difference between them and Trolls. Have Antidote Runes or Exana Pox ready, because the poison can be annoying for low levels.
