Ran into another level 85, this time a mage.

The first time I caught me off guard and annihilated him. He came back prepared...

Now I fully understand when Mosq2 says "I lose to roots".

God damn Ring of Frost and Ice Nova. I got lucky a few times killed him again, but he wouldn't stop camping my group so I logged. Though in each encounter I got him fairly low.

I imagine once I hit level 85 with some resilience, he would be dead in seconds.