The minimap p ing hack works faily well for blizzard. Nothing short of a ping on the minimap or a click on the screen will do that for blizzard. For what it's worth I leveled Team Doublemint to 70th without using blizzard at all. 2 mages, 1 priest and a paladin... joined by my shadow priest @ 70th (I'm considering pushing another mage to 70 to round this out better, but the shadow priest has nice synergy when I remember to use)