Emma Watson does not need a wand
PrevNode LinkNextEmma Watson played Hermione in the Harry Potters, but she doesn't need a wand to kick your ass.
In Selina Mandrake, the titular protagonist (whom I want to be played by Emma Watson) is able to "kick ass" (or "slay" and/or "dispel") without needing a wand or any other violent weapon.
This captioned image was originally conceived for use in a different screenplay and has later provided inspiration for a scene in Selina.
For you people lacking imagination: you can figuratively "kick someone's ass" by convincing them they had been wrong, or by winning in Checkers or Bohnanza or Darts or electronic sports or whatever, or alternatively by enlightening someone.
(That put aside, I don't rule out that Emma Watson is a good mixed martial arts fighter despite appearances to the contrary. Do note that while she might get angry (which has been erroneously referred to as "verbal violence"), she won't attack you out of the blue or even deliberately kick a friendly cat or dog.)