Remus gave a slightly frustrated sigh. "They would have, if I could have remained as a teacher. I wanted to make proper dueling times actual defense. The restrictions they had were foolish; it's important to learn about all sorts of Dark Arts, natural and man."

He shook his head. That dream was impossible now that the world knew what he was. "Anyway. This time, I want you to manage to petrify me but you will be on a time limit." He held up a finger. "You have until I cast a dark spell in return." More complicated, slower, stronger. "I'm quick, I'll warn you."