Oliver couldn't help but chuckle. Well apparently they had been listening very well last class. Most of them almost recited him word for word.

"Okay very good. You were all listening, I think that's worth an extra point." he chuckled again as he perched himself onto his desk. "Personally I prefer to use wood myself and there is a very good reason for that."

He inclined his head towards the back where the row of trees stood. "Who can tell me what is special about those trees up the back. And second question, why do you think I prefer to make my rune set out of wood?"