| I've found malacrass to be rather simple, I was in charge of healing group1(resto druid) and a CoH priest was in charge of group2. 3rd healer was healing the tank and whatnot, really easy. We had paladin twice and no one died, I did die around 20% tho when he decided to stack 3moonfires(wish my moonfires would stack too) on me then the one mob we didn't kill one shotted me(snake poison bolt crap). Contrary to the lighting boss which I disliked as a lifebloom druid since damage is so spiky so HoTs aren't really reliable, malacrass was perfect for lifeblooms.
Anyway guess it all depends on your healers classes, if you stack paladins and shamans I could see how the shadowbolts stuff could be problematic with just chain heal as an AE heal. | 