In the book, Snape uses a non-verbal spell, so we don't know which spell he used,
In the movie, the spell Snape uses is "Vipera Evanasca".
Vulnera Sanentur.
Draco Malfoy was created in 1997.
This is a very broad question, and not worded correctly. Severus Snape killed Albus Dumbledore in the end of the sixth book. Dumbledore had asked Snape to kill him, to save Draco Malfoy's soul because of the Unbreakable Vow that Narcissa Malfoy made Snape take in the beginning of the sixth book since Voldemort had ordered Draco to kill Dumbledore.
severus snape
Sectumsempra is a Dark Arts curse invented by Severus Snape (under his alias of "The Half-Blood Prince") for the use against his enemies, and it soon became one of his specialities. When uttered, its effect is the equivalent of an invisible sword, slashing the target repeatedly. The injuries appear to follow the movements of the caster's wand, and thus inflicts the most damage if cast with rapid waving movements. It works best on living targets and has no noticeable effect on inanimate objects or dead ones, such as Inferi, other than slashing them pointlessly. Sometimes the slashing cuts are continual, or it could be one cut.
They are (in no particular order) Harry Potter, Ron Weasley, Hermione Granger, Ginny Weasley, Fred Weasley, George Weasley, Albus Dumbledore, Neville Longbottom, Draco Malfoy, Rubeus Hagrid, Seamus Finnegan, Severus Snape, Lily Potter, Gregory Goyle, peter pettigre (as Scabbers in movies 1-3)
No, Severus Snape is.
Severus Snape or Draco Malfoy
No, Severus Snape did.
Vulnera Sanetur was the song-like incant of a healing spell and counter-curse to Sectumsempra spell, both of which were invented by proffered Severus Snape.
Draco Malfoy was created in 1997.
voldemort, bellatrix lucious malfoy, Draco malfoy,Severus snape,minister of magic
Nothing, Draco laughs at him as Severus Snape shoots scathing remarks at Harry and removes points from Gryffindor.
Voldemort? or maybe Draco Malfoy.
This is a very broad question, and not worded correctly. Severus Snape killed Albus Dumbledore in the end of the sixth book. Dumbledore had asked Snape to kill him, to save Draco Malfoy's soul because of the Unbreakable Vow that Narcissa Malfoy made Snape take in the beginning of the sixth book since Voldemort had ordered Draco to kill Dumbledore.
Draco Malfoy, Amycus Carrow, Alecto Carrow, Fenrir Greyback, Severus Snape, and Yaxley
Tom Riddle Draco Malfoy and othe Slytherin students Lucius Malfoy and other Death-Eaters Severus Snape (arguable) Voldemort Dolores Umbridge (not arguable)
Yes, it was invented by Severus Snape.