The bellow comps if the hunter is in the open I'll gib them, but more often than not these comps I end up 1 shotting a healer. I'm still kind of under geared so the higher good teams even though they are down a healer do so much effing cc and burst that they'll get me. Mages are also good kill targets if you can make sure to get them before they block or atleast force the block without burning your EM.

Destro/Ele/Hunter + Disc Priest & Holy Paladin

Arcane/Destro/Ele/Hunter + Holy Paladin

Destro/DK/Frost Mage + Disc Priest & Holy Paladin

Rogue / Mage / Priest / Destro / Shaman ele or resto + Holy Paladin or Disc Priest