Brilliant Room of Rooms
Battle of the Department of Mysteries
Ministry of Magic Department of Mysteries
Despite being widely considered a bit dotty by her classmates, Luna Lovegood, was in fact a highly talented Witch. Her abilities made her instrumental at the Battle of the Department of Mysteries as she helped her fellow students survive an ambush by Death Eaters. Luna Lovegood most certainly embodies the phrase “Don't judge a book by its cover”.