Today for DARK ARTS, Amycus announced that they would be learning the Corrosive Shield. This incantation is Mordax Scuto. The shield is a dark barrier that comes up. Like a shield during the days of old, it looks to attach itself to the other arm of the caster, so they need to duck behind it to block any spells. The stronger someone casts the spell, the bigger the shield is.
Partners are supposed to practice simple spells against each other.