bevinator: Fair enough, as I've not actually watched it. I just assumed it was on account of the "extremely long and intricate spinny casting animation by a magical girl that's never interrupted by the bad guys." That's only 50% of the recipe, of course. You also need lots of TEEN DRAMA, which you can't really convey in a short youtube video. My mistake.
This one was the most powerful spell in the universe. It requires using the ancient artifact and calling upon some Dark Lord to aid you with power.
But it also has fire arrows, fireballs, disintegration and all kinds of generic western RPG spells. It's also pretty fun :D