Evelyn Vance is a recognized aloof student in Ravenclaw and a master of abstraction in the theater of the mind.
She arrived at Hogwarts with an accurate prediction of the plot. She wanted to be an elegant outsider, but instead received an extremely "shaky" wand in Ollivander's shop.
Black walnut, phoenix feather, ten inches.
It rejects lies and pretense. Only the most sincere soul can make it burst into glory like a silver black bird.
When Fred and George discover that this serious school girl can accurately optimize the ratio of prank potions without expression, the nightmare (or carnival) of the whole school begins.
Intention: Face your heart directly