Books·Updated on Jul 27, 2021What's Your Patronus?Expecto Patronum!by Arielle CalderonBuzzFeed StaffFacebookPinterestTwitterMailLinkBuzzFeed Quiz Party! Take this quiz with friends in real time and compare resultsCheck it out! All photos via Warner Bros. Are you as smart as Hermione Granger? Check out the hardest Harry Potter trivia below! View this video on YouTube youtube.com