a stonegrabber  

I took this guy out with my pet dog.

High resistence to posion and disease. None of my spell land on him at lvl 32. First try He made me run home to zone line with Low health and he ate my pet.

Second tries, I tanked while my pet nip at his heel and my Distillate Divine healing potion V. heal me. Would have died faster if my spell land but they got High resistance.

I logged on my 75 pally in and it died in 2 hits..LOL. I don't think it landed any hit on the pally. She got off without mob even hitting her. Stone grabber are weak against melee/hybrid class for sure, but they will put up a resistence fight against casters, unless you are lucky!