As with other encounters, with high enough dps you can just steamroll this, even at level 70 (yes, lvl 70). I tried this last night with my new team (in quest greens and Nexus blue shoulders), each of my damage dealing characters posted over 1200 dps (druid, 2x ele shammy - with about a 33% crit rating each and only 500-600 spellpower). I did not use elemental mastery, or trinkets, nor did I use druid trees. I did use 2 fire elementals though to help burn this dude down. I will say that I did a ton of healing w/ my resto shammi for this fight though, and my Healing Spring totems each heal for 100-110 health per tick (~150 avg healing per second w/ 3 totems down). As others have mentioned, when the skeletons come, toss an avengers shield at them.

Edit: seems like part of my post went poof - but for the attack, I simply ran straight into this guy (didn't put totems down until I was already engaged in combat), and proceeded to kill him from there.

Cheers