"Good!" Treating him as a student, not at his level, or he would have in for something more dangerous than what he did. His next spell came in during that moment when Draco was distracted and it was a very simple spell. It would grow Draco's lips to twice their current size. Even that had a point.

"Such a simple spell, but it makes it more difficult for you to speak your next spell. It can be the simplest things that give you the edge over your opponent. However, you could have stayed still and got me in a difficult predicament before you removed the ice."