kk triple melee needs much skill, oh wait quad melee needs a bit more skill

you have to find your own tacitc, problem is after you kill a pally instant before hes using bubble, it won't work again so easy
thunderstorm-earthbind rota is very important, I would recommend you to focus the ret until bubble, flameshock druid+medallion+instant lava(druid dead), spam heal untril ret bubble fades, nuke the retri pally. You can also sometimes switch to the warri, just fake cast at him, he should instantly go reflect

avoid to nuke the warri if hes using bladestorm, nuke one of the healer at first or the rogue with focus target, instant lava+frost shock should be enough