The Belial Siphon was one of the most dangerous and terrifying spells known to mankind. It was so feared that Spike had regarded it as a myth, Anya stated no self-respecting demon would even think of trying it, and the Watcher's Council had placed a strict ban against its usage. When the Scooby Gang found themselves dealing with what seemed to be the one true natural apocalypse, Willow suggested the Belial Siphon, unwilling to give up without a fight,