10 Deadliest Spells In The Harry Potter Universe

9. Diffindo

Diffindo Harry Potter
Warner Bros.

What does it do? Can be used to cut, rip and tear the target - useful for shredding paper. And humans.

Though Diffindo is always used for non-violent means in the Harry Potter universe of books and movies - Harry splitting the ice to reach the Sword of Gryffindor in Deathly Hallows Part 1, or in the books, Ron using it to trim the sleeves of his dress robes before the Yule Ball, for example - the deadly possibilities it possesses cannot be undersold.

If used for more sinister means, Diffindo has the capability to cause severe injury, or even death - and a rather bloody, messy death at that. It can cut and shred your opponent like a cheese grater on Red Leicester, which would be painful, to say the very least.

Diffindo's one of many spells like this in the wizarding world - ones that seem harmless if used safely, but could prove fatal is abused or misused - and given its wide variety of applications, it wouldn't be surprising if we see it pop up in one of the slated Fantastic Beasts sequels.

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Danny has been with WhatCulture for over ten years, and is currently Doctor Who Editor and WhoCulture Channel Manager, overseeing all of WhatCulture's Whoniverse coverage. In 2022, he took charge of WhoCulture and has grown it into the biggest Doctor Who channel on YouTube, and one of the biggest Doctor Who communities on the web full-stop. He has been writing and video editing since his early teens, and first got a taste for content creation after making his own Doctor Who trailers, off the back of a burning obsession with the Matt Smith era of the show. Like many his age, he first got into Doctor Who with the 2005 revival, but has since gone back and fallen in love with the classic years too. If you need someone to recite every Doctor Who episode in order, or to give you a random factoid about the making of Gridlock, Danny is the person to ask!