Wasn't blizzard saying this back in the day.... Now it seems if you don't have a certain class a fight is almost impossible....
Durumuu heroic... No ele shams locks
Horridon heroic... Oh no decursers
Council heroic... Practically screams a must for fire Mage and rogue to smoke cheese frostbite..
Heroic iron qon... Oh no lock or Druid gl on tornados