Many times has the question been asked, "Who would win in a fight: Voldemort or Darth Vader?" While we can agree that Star Wars' Darth Vader enjoyed a lot more success than Harry Potter's Voldemort, the latter villain still hails from a world filled with deep and sometimes dark magic. That's why the question is such a toughie, since J.K. Rowling's vibrant world building has left us with so many powerful types of magic and spell work that even today we're still learning more about it in the world of Fantastic Beasts and Where to Find Them.
A better question, of course, would pit Vader against Dumbledore, but even Dumbledore had his limitations, as we've witnessed in both the films and the books. There are powerful forms of magic seen the Wizarding War but never in the classroom. Some make perfect sense for Hogwarts teachers to avoid; teaching dark magic would be irresponsible. But others powers really should have been used or taught in class to better prepare the students for their fight against Voldemort. Here are Harry Potter: 20 Wild Superpowers Hogwarts Wizards Have But Have Never Used.
20 Legilimency
The ability to pry into another wizard's mind and read it isn't a natural born talent for most witches and wizards, but it's a very helpful skill that dark wizards often employ to carry out their plots. It would make a lot of sense for the subject to be taught in N.E.W.T.-level Defense Against the Dark Arts to help future Aurors gain information from suspects, but it might be too intense for students who aren't pursuing this career.
19 Flight
Wizards and witches can fly? According to Severus Snape and the Death Eaters they can. So why don't any other witches or wizards fly as well? Fans have joked about enchanting underwear to make it possible but the fact remains that it's not taught at Hogwarts and we only see evil characters do it.
18 Alchemy
Technically, alchemy is a subject in the Harry Potter universe, but we never see it actually taught in class. Sixth and seventh-year students are allowed to take the elective, which involves the transmutation of substances, like metal into gold. It's a neat skill that would have been interesting to see in the series.
17 The Sight
Sybill Trelawney has only demonstrated being able to deliver prophecies twice in her entire life that Dumbledore knows of, which is why it's weird that she continues to teach at Hogwarts when there are other masters of The Sight who could teach divination to the students at Hogwarts. Aside from Trelawney's ominous warning, we never get to see this superpower used at Hogwarts.
16 Unforgivable Curses
While we technically see Severus Snape and Barty Crouch, Jr., while posing as Alastor Moody, utilize Unforgivable Curses at Hogwarts, actual Hogwarts teachers obviously never use these spells in front of students or teach them to carry them out. These incredibly powerful curses, including the Imperius Curse, Cruciatus Curse, and the Eliminating Curse, do lasting harm and are forbidden to all witches and wizards, which is why we don't see them every day.
15 Elder Wand Powers
Dumbledore is in possession of the Elder Wand, which is one of the most powerful magical objects ever made. It can do things otherwise impossible, like mending broken wands, so we wonder why Dumbledore didn't use it to help Ron out with his wand. He also never used it to break the curse on the Defense Against the Dark Arts position.
14 Arithmancy
Arithmancy is another subject that's technically taught at Hogwarts, but we never witness a teacher using it. The course includes really helpful magic, like inventing spells, so it would be interesting to witness teachers using it. We know that Severus Snape invented spells in the past, but we have never seen the process in action.
13 Occlumency
The opposite of Legilimency, Occlumency is the wizard ability to block someone else from accessing one's thoughts. Dumbledore instructs Snape to teach Harry this difficult skill, which doesn't make sense since he knows they despise one another, and it's no surprise that Harry doesn't get very good at the skill. But where did Snape learn it in the first place? Why isn't it taught at Hogwarts?
12 Time Travel
Hogwarts students are seen utilizing Time-Turners in the series, but teachers never are. This seems counterproductive since there are so many instances where they would be helpful in preventing everything from Quidditch injuries to Wizarding Wars. The logic against their use is the same behind any other time travel argument, but they are still used in Prisoner of Azkaban to save a hippogriff and Sirius Black... by children.
11 Xylomancy
Xylomancy is another subject taught to witches and wizards, this time at Ilvermorny School of Witchcraft and Wizardry, that we never truly get to witness. It involves using sticks to perform divination spells and it's mentioned in a newspaper during the film Fantastic Beasts and Where to Find Them, but we have yet to witness what it truly entails within the series.
