Ran Heroic UK again today and this time did it with no deaths. I changed one thing on prince that helped a LOT. Instead of mana spring totems I used glyphed healing stream totems x 4 - this cut down on how much I had to heal and nullified most of the ice tomb damage. That, combined with 4 fire elementals and blowing bloodlust and trinkets etc right at the beginning made it so he went down with no one dropping below 50% health. Was total cake.

Second boss went down on the first try, a bit hectic but not too bad, and honestly Ivar was by far the easiest boss. I hardly had to heal at all. Just took the first phase easy and used nothing but LBs and mana springs, then on the second phase I dropped 4x healing stream so I didn't have to chain heal after his roars, used bloodlust, trinket, ele mastery, etc, and he went down so fast I think he roared once and that was it. The best thing for this guy is to just make sure to tank him at max range and have a mod to see his cast bar and the rest is total cake.

Now I have to go back to DTK and get the achievement for that one