Also I really hate Utgarde Pinnacle, the first 2 bosses aren't too bad but Skadi is just a pita, and then the king is even worse (for me). I managed to kill him once, but usually wipe an insane amount of times on him. Just that one boat that lets him summon orbs sucks, I try to run away but it usually catches one of my shamans or my tank, and then of course if you don't immediately purge bane thats a quick wipe too. Feels like a crazy hard version of DDR
For the last boss use a PvP trinket when he goes to the boat with the orbs, you can snap out of the stun and dps him down so he never even pops the orbs or if he does they'll vanish anyways since his hp dropped so fast.