"Good morning, class. We've studied the theory behind nonverbal spells for the past few days. Now we shall begin to put this into practice. The same will occur in your Charms and Defense Against the Dark Arts classes. I have set a match on every desk. It is your task to change it into a needle, as you did in your first year. This time, however, the spell must be nonverbal. Are we understood?" The professor looked around the room for any possible confusion before saying, "Proceed."