User blog comment:Dryuuu/FAVOURITE SOUNDTRACKS OF SERIES 4/@comment-4650675-20120511120751/@comment-4623180-20120511121124

That is a wonder, why can't they just use their eyes all the time, perhaps an adrenaline rush or lots of energy can give them the ability to not have to do so? Or they chant a spell beforehand which lets them discharge magic without talking.

Oh well, no use debating, it is fictional! :P