I used up all my attempts for today, but I'll try the one elemental tomorrow and let you know how that goes. For positioning, I dropped my totems kind of back near that fountain thing, walked up and turned in the quest, and popped my elementals and ran back to my totems before they aggroed. So I had some distance between my elementals and me. I pulled aggro, but not immediately, so when I did I was able to thunderstorm him back and continue DPSing without him being close enough to hurt me with the aura.