Ohh, Finally a question that Lily knew an answer to. After switching to the other leg, Lily carefully raised her hand, "A curse is the most severe form of spell that one can use on another. I think an example would be the petrificus curse." Lily had read about curses at least and everyone was mentioning the unforgivable curses, so Lily went for something different. If only I had read up a bit more... Lily thought. I might actually enjoy this class with all the yoga and whatnot.