One of the most popular moves of this class is the disarming spell also known as expelliarmus. If you are fighting against a strong wizard or witch and you know this spell, you most likely won the duel. But remember, learning this spell so practice makes perfect! Expelliarmus makes the opponents wand go flying out of their hand so that they have to wand to use! This is a very useful spell and a really suggest practice it when you can and use it when you have to.