I've successfully done it 4 times on normal mode so far, but with only using 4 out of my 5 shaman for each attempt. The 5th person was a Paladin healer that I run Arena with. I don't think I could pull it off on my own without having to spend a lot of time on macros and spec'in one of them Resto.

The big issues and how i dealt with it are:

Knockback - Getting launched into the water, behind an obstacle like the ice blocks, or out of /follow range was by far the most difficult part of this fight for us. Spread out macros are a must here to ensure your entire group isn't getting ice spiked at once. I ended up positioning myself to the left of Ahune with my back against the short wall. This wall does not prevent you from being knocked back, but it sure helps by giving you a safer place to fly back on. I didn't see any mob follow them up there nor have any issues with evade, could have just been lucky. I would continue repositioning myself in that area as the fight went on, which allowed me to be in range of the frozen core when the first phase was up.

DPS - Assisting my main was not effective for burning down the weak little adds. Chain Lightning was great when a lot of them were up, but timing issues would cause several CLs to not go off since the target would die with the first hit if it crit. I ended up creating targeting macros for each character so they could shock / CL things down independently of my main. Lots of shocking is tough on the mana pool though, and I always had to quaff a pot at the end of the 2nd phase 1. I also was trying stoneclaw and magma totem combinations with some success, as well as the paladin dropping consecrate on the 2nd phase 1 because of the extra cyclone adds. The good thing though is that the shaman burst shines on the Frozen Core phase, I can get him down to 30-35% on the first one.

The writeup at WoWiki HERE will explain the fight from your standard perspective. The only thing i could add or change to that for me was that the big elite wasn't so bad when being burnt down by 4 well geared shammies. The stacking AOE ability never got to the point where it was hurting. I did use 2 Earth Elementals on each Phase 1 and dropped Fire Eles if I felt like I was getting overwhelmed for a burst of AE (Effective but the eles die quickly).

I'll give heroic a shot tomorrow.

Team Quixotry <Hoof It>