I was killing tribals of for the acrylia ore and this little bugger jumped me.
I am a 51 necro, so I cast "dooming darkness" (slows movement+DoT) on him but the game told me that "this XXX cannot have movement hindered"
And he also seemed very fond of the "Malaise"-spell.
Just a small heads-up for any lower levels trying to hunt this guy and that want to avoid a nasty surprise.