We tried this fight tonight with a frost mage ranged tanking Keleseth. He got one-shot the first try and we simply decided to have a retadin spec prot for it. While he had a tough job running all over the damn place picking up all the orbs, but it did went a lot better from that point on - we probably could've downed the fight if we hadn't wiped on other stuff (beach ball failing, fire orb spawning next to me and 1-shotting me, tanks being too far away to all receive heals, etc). While I guess a ranged tank could do it, I'd simply suggest getting the person with the highest amount of hit points for it.
Also,
Quote:
Your ranged tank needs to cancel any shadow resistance buffs they have. The resistance can cause you to resist the shadow ticks from the nuclei, which in turn causes you to resist the resonance buff.
That is going to be posted on our guild forums - after an hour of wiping on stupid stuff I do *not* want another near-kill because this happened. Thanks for the heads up.