Qaz walked out of the Ravenclaw Common Room just in time to see a Griffie hex a Slytherin. Well, two can play at that came. Qaz waved her wand at the Griffie, 'Impedimenta'.

Before anybody could attack her, she protected herself with a circular wave of her wand and 'Impiriano.'

Best be on my way, she thought, and ducked back in the Ravenclaw Common Room.