Wilhemina Phelps

“Oh, are you doing magic? Let’s see it, then.”
She sat down. Ron looked taken aback.
“Er — all right.”
He cleared his throat.

“Sunshine, daisies, butter mellow,
Turn this stupid, fat rat yellow.”

He waved his wand, but nothing happened. Scabbers stayed gray and fast asleep.
“Are you sure that’s a real spell?” said the girl. “Well, it’s not very good, is it? I’ve tried a few simple spells just for practice and it’s all worked for me. I’ve learned all our course books by heart, of course.”
― J.K. Rowling, Harry Potter and the Sorcerer's Stone