Multiple choice general knowledge Which spell causes the face and chest to be slashed as though by an invisible sword Sectum-sempra Section-sempus Sectum-slases Reveal answer Fill a bubble to check yourself A Correct answer Explanation Sectumsempra is a dark curse invented by Snape that slashes the victim as if by an invisible sword. It causes severe wounds and was used against Draco Malfoy and George Weasley.