As the title says, for healers were running Disc Priest, Holy Pally. Damage seems out of control. We stack on one person and keep moving as strats say but we always seem to lose 1-2 people.
On my kill we had our shaman throwing out chain heals and ret healing sometimes as well. Assuming people aren't getting hit by wicked spirits or bombs the frostmourne aura damage isn't that bad.
I'm a disc priest and what I did was shield the group I'm not in and holy nova and shield my group. throw pom around. our pally dsac'd and we just made sure to move.