Ive beaten 3 healer 2 melee combos. Ive beaten 4 mages 1 priest combos, Ive beaten 4 mages 1 rogue combo. But what really destroys me is rogue, warr, DK , hpala, Priest/shaman/druid combos. They are the hardest. My tacs for these fights is to purge both the warrior and the DK. Try to force the DK to use his anti magic shell real early. Then do a quick hex, and start nuking either one of em. My priest will also try and fear the healer when I do this.