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[edit] Description

Sectumsempra is a spell that is used to cause major harm to the opponent's body, by slashing deep cuts within the torso and lower body.

[edit] Appearance

First seen in Harry Potter and the Half-Blood Prince when Harry uses it on Draco Malfoy during a fierce battle between them in the boy's bathroom, causing Draco to have many deep cuts and slashes across his body. Also known to be used in Harry Potter and the Deathly Hallows by Severus Snape, when he attacked George Weasley, as he thought he was Harry Potter. This made George have only just one ear.