Cormac and Luna went first. Luna gave a curtsey instead of a bow, which Hermione sighed at before watching as the witch flounced ten paces. Cormac took irritation at this, more so than Hermione. As they reached ten paces, his grip on his wand was so tight that when Luna spun and decisively cast expelliarmus, he was caught surprised as he was thrown back with his wand. 