Magic corrupts. Well, the real saying is “power corrupts”, but in many fantasy settings, having magic is the same as having power, so for our purposes, magic corrupts. Indeed, where would a fantasy villain be without awesome magical powers? And as villains are some of my favorite characters, this is a topic that has fascinated me for ages. Magic + amoral people is a surefire way to make me interested in a story.
Buffy was one of my first fandoms, and I loved it. I also loved Willow Rosenberg, a Jewish witch who’s openly queer and unapologetic about her nerdiness, a great deal. Willow spends most of the series as Buffy’s best friend, constantly ready to help save the day with her powers. Unfortunately for Willow, things take a turn for the worst in Season 6. We learn that magic is addictive, and her powers start controlling her more than she controls them. As Willow loses herself to her magic, she turns to villainy, leaving her at odds with Buffy and the rest of her friends.