Now that she felt that weird tingling in her right hand, she forgot for a moment how she was supposed to get rid of it and started to shake her hand, as if trying to shove away the feeling. But of course it didn't work. It felt even weirder.

But... ah. The finite thing.

Pointing her wand for the last time at her hand, she mumbled "Finite," and waited until the tingling eventually faded. Brushing her palms against the desk, she was glad to find that they both felt the same once again. She was so not trying that one on her hand again.