Did professor strict charm lady just say undetectable expansion charm? Lily sat with a huge grin, listening to the professor and then classmates. A bigger inside without a bigger outside was always a concept that Lily never fully understood, probably because she had never seen it at work.

While listening to her classmates, the fourth year jotted down a couple notes before turning her attention back to the professor and Captain Milton. Now why did he have to go and get himself a detention right before one of the biggest matches of the season, even if it meant Lily would have a better chance of playing chaser?