Amazing card, but IMO not the best pitch, Elvish Spirit Guide is. Saves ass, but doesn't whoop it. Isn't part of any famous combos or decks like charbelcher, which does the unthinkable in MTG: play land-less. Exiling a ue spell is nothing to sneeze at, and losing life in a color unable to replace it is dangerous. Still 5/5 bit Id draft ESG over FoW, because even FoW can't counter it.