I did Morchock, Yor'sahj and Hagara as frost yes, I guess zonozz would be doable as well, but didn't try, maybe next week
Got Hagara hc to 5% after 2 pulls, so it's doable with a bit better rng, got sick of her starting in lighting phase 4-5 times in a row so I stopped
http://www.twitch.tv/fnx1337/c/3268788
http://www.twitch.tv/fnx1337/c/3268803
Didn't record Morchok, but here is the 2 others.
(If someone have a madness lockout, I don't mind trying )