I don't know, static fire is great against any air unit. If you have like five archmages, almost all his air units are dead in one salvo, if you do it right. And you can use archmages like suicide bombers, letting them use static fire to kill a bunch of his archers or battlemages in the back. They won't have enough EP left, of course, so then they get killed, but after those archers are dead you move your dragons in and destroy him. Still, I don't really use archmages that much, just battlemages, dragons, and magic armor for the most part.