Snape successfully casting Avada Kedavra against Dumbledore is a powerful, overlooked piece of magic. You have the really mean the unforgivable curses. Snape did not want to kill Dumbledore.
Voldemort knew he couldn't cast Avada Kedavra with the Elder Wand to kill its master, so he ordered Nagini to be the one who killed Snape. In reality, the Elder Wand belonged to Draco, as he was the one to disarm Dumbledore in the Astronomy Tower.
Snape didn't want to kill Dumbledore, and this was why the spell was blue instead of the usual green.
The fall kills Dumbledore. For an Unforgivable Curse to succeed, the caster has to really mean the spell. In 'Half-Blood Prince', Severus Snape has no desire to kill Professor Dumbledore.
Voldemort believed the Elder Wand would change allegiance based on who killed the last owner, not who disarmed the last owner. This proved to be Voldmeort's fatal mistake, because Snape never owned the wand.
It's a word that gained so much more clarity and tragedy after Harry Potter and the Deathly Hallows revealed that the nefarious Professor Severus Snape was actually serving a nobler cause: protecting Harry from Voldemort out of love for Snape's childhood friend Lily Evans.
Lily's Protection In Voldemort's Blood Saved Harry
When Lord Voldemort returned Harry Potter and the Goblet of Fire, he used Harry's blood - which is partially how Harry survived Avada Kedavra in the forest.
To do this, they must first commit murder. Voldemort intentionally made six Horcruxes, but when he used Avada Kedavra on Harry, he unintentionally created a seventh Horcrux. Instead of dying, Lily's love for Harry created a counter 'curse' known as Sacrificial Protection and saved Harry.
He was on the point of collapse when it happened,” Rowling said. “Dumbledore didn't want to lose his wand at that point and Draco disarmed him. So that meant that the wand gave Draco its allegiance, even though Draco never knew it, even though Draco never touched it.
Quirrell didn't use the Killing Curse on Harry, because Voldemort said “use the boy” to get the Sorcerer's stone from the Mirror of Erised.
Why doesn t Harry use Avada Kedavra on Bellatrix? Harry didn't use that spell because he cannot bring himself to kill anyone. He is not a killer.
Sectumsempra was a curse invented by Professor Severus Snape that lacerates the target and causes severe haemorrhaging. Snape created it as a student of Hogwarts, with the intention of using it against his enemies, likely including the Marauders, and it became one of his specialities.
It was Snape who taught Harry his signature spell: Expelliarmus.
Draco Malfoy's mother Narcissa was cold, cunning and devoted to the Dark Lord. But she was also a mother, which meant she was willing to risk everything to make sure her son was safe. When Harry survived Voldemort's Killing Curse for the second time, Narcissa pretended he was dead so she could get to Draco.
Powerful creatures such as trolls, dragons, and giants may exhibit magical resistance – a certain degree of immunity against hexes and spells. Hagrid is resistant to certain spells (like the Stunning spell) due being half giant.
The most likely reason why Lord Voldemort's nose disappeared and he devolved into such an evil-looking creature is that as he dabbled deeper into the Dark Arts, his appearance gradually became as distorted as what remained of his twisted soul.
Harry also happened to be Snape's least favorite student.
In the first movie the the scene of the troll you can see that snape has a bleeding leg, why? Snape was bitten by Fluffy the three headed dog. When Troll was released, he went to make sure that no one was after the stone as everyone was distracted by the troll.
Professor McGonagall knew that Snape was working with Dumbledore. Everyone in the Order did, which is why Snape was actually let into Order meetings - if they didn't know, they'd likely have tried to not let him it. However, she didn't know that Dumbledore and Snape planned Dumbledore's death.
12. Snape's Last Words. In the [Deathly Hallows] book, Snape's dying words to Harry were "Look at me". Right then we did not realize the significance of his words but in the very next chapter when Harry goes through Snape's memories in the Pensieve, he comes to know how much Snape loved Lily.
Should Snape have never been sorted into Slytherin, he wouldn't have spent nearly as much time with the wrong sort of people, he wouldn't have received James and Sirius' disdain, and his friendship with Lily wouldn't have abruptly ended. Lily's good influence on Snape was now lost.