That was one of our 3-healing attempts (with druid) and demanded, in no way whatsoever, more mitigation or padding on my part. As far as H Council goes, I learned the other day that it's possible to cheese the Frostbites with our bubble, so I'll do that next week. It turns out that I also missed a few dispels which I'm very much aware of... Does Frostbite sometime coincide with Sandtraps going out? It could've been Healbot overriding one with the other, although I'm not sure that's the case.
I mostly need help with Twisted Fate -- what's the average/expected tick designed to hit for? What's the DPS requirement for the fight?