Heh yeah that immune to nature made me go WTF?! I didn't even notice the first 2 attempts, just thought she was seriously tough.

What I did was park the shaman on the ramp you come down, right at the base. While she was at the far side of her circuit I run out a ways, dropped my tremors (didn't even stagger them atm, I'ma nub), 3xhealing, 1xmana, and a windfury. Then I backed them up right to the edge of that ramp and dropped 4xsearing right at the start of battle.

From there it was more a game of patience. Build a little aggro with my pally, then FROST SHOCK!!!, wait a tick, heal with all 4 shammy, FROST SHOCK!!!... etc. Then pretty much every fear would nab me for 2-3 seconds and she'd go play with the shaman but a quick taunt (forget what it's called) and she came right back. Frost shock her again then h ave everyone do a staggered chain heal to self and then heal the pally (prolly time again). If she got too close to the shaman with her farts I just backed them up then forward again when done.

With your druid you should be able feral charge I guess to get her attention again. Just be sure to pull her back out of fart range of the shaman. Every 4xFrost Shock did like 8% on her, so that plus searing, plus whatever the pally is scraping off basically means you need to hit her 10 times.

GL! That immune SUCKS. Otherwise she'd be dead in like 20 seconds.

and I think my shaman were 48 and pally 49 when i did it.