Avada Kedavra, also known as the Killing Curse, kills a person instantaneously and without injury. There is few counter for it, and only one person, Harry Potter, has ever survived it with Sacrificial Protection that has been endowed upon Harry Potter by His Mother Love for Him.
The Killing Curse ('Avada Kedavra')
If this countdown were about which spell is the most unforgivable we might agree – but weirdly enough it's not. In our eyes, the quick death afforded by Avada Kedavra seems to us a (very slightly) better option than suffering the curses below.
The three Spells I am referring to are Avada Kedavra, Imperio, and Crucio. In the Wizarding World, these three spells are also known as Unforgivable Curses. Using one of these spells on another human would result in a life sentence at Azkaban. That is how truly powerful these spells can be.
How Expelliarmus Beat Voldemort's Avada Kedavra - Harry Potter Explained - YouTube.
The Killing Curse was created in the early Middle Ages by Dark witches and wizards. Primarily, the curse was used to quickly slay opponents during a duel.
He is also revealed to be a double agent for Albus Dumbledore and the Order of the Phoenix. But many people forget that he also invented a number of spells. In the Harry Potter movies, Snape came up with the Sectumsempra curse when he was a student at Hogwarts, and it's known to cause painful lacerations on the target.
Harry became so enamoured with the spell that he eventually used it to finish off Lord Voldemort. Here's how Harry's relationship with Expelliarmus became his signature – and why that's a good and bad thing.
Throughout the entirety of the franchise, Harry is thrown into the most heat, and his skills as a wizard are constantly tested. That being said, his go-to spell has to be Expelliarmus.
Voldemort killed Snape in Harry Potter And The Deathly Hallows Part 2 using his Horcrux snake Nagini instead of his favorite Unforgivable Curse, Avada Kedavra.
Level 98 Death Spell: Shift Sugar Glider
At eight pips, this is again underpowered and nearly useless, but at four, it becomes the Loremaster of the Death school. Place a Gargantuan on this, and it's and incredibly useful shield-breaker (or even damage spell), and also packs the Weakness and Infection.
Extended Description. The three curses that are classified as Unforgivable are the Imperius Curse, the Cruciatus Curse, and the Killing Curse. Mad-Eye Moody introduces Harry and his class to these curses in Harry Potter and the Goblet of Fire.
Level 118 Death Spell: Qismah's Curse
Death's Mirage spell is Qismah's Curse, and costs 4 pips and 1 shadow pip. It does 1020 Death damage divided between 1, 2, 3, or 4 enemies.
The darkest of the Dark Arts, Harry Potter unforgivable curses are the Cruciatus Curse, the Imperius Curse, and the Killing Curse. Although the curses are highly illegal, Harry using Unforgivable Curses happened, but he uses them once he was thrust into the Second Wizarding War.
Malfoy spots Harry and casts a Cruciatus curse; Harry, defending himself, using the Half-Blood Prince's Sectumsempra spell without knowing its effects. To his horror, it gashes Draco's face and chest, spilling his blood everywhere. Moaning Myrtle flies off, screaming.
Firestorm. Firestorm was a spell that created a large ring of fire around the caster's wand. This spell is one of the last and most powerful spells that Albus Dumbledore cast using the elder wand before his death.
In the books it is revealed that Harry Potter got the scar when he was attacked by Voldemort, who had just murdered his parents. Voldemort launched the killing curse "Avada Kedavra" at baby Potter but the spell rebounded. It was the only time someone had been hit in the face by the curse and survived.
Alohomora, which is a spell that unlocks objects (and it's also Hermine Granger's signature spell).
As the youngest Weasley, we're sure Ginny observed more than her fair share of unpleasant spells over the years but it was the Bat Bogey Hex she was famous for – and with good reason.
When Snape killed Dumbledore. In probably the most shocking twist of the series, Snape cast the unforgivable Avada Kedavra curse on Hogwarts' beloved headmaster.
In the Harry Potter series, Bellatrix Lestrange used the spell "Avada Kedavra" to kill Sirius Black.
It's unknown quite how they managed this, although we do know that certain spells do levitate things, such as the Levitation Charm, or Snape's self-penned spell, Levicorpus.
She stared Bellatrix down and challenged her to a one-on-one duel. Molly Weasley had hit Bellatrix Lestrange straight in the heart with an unspecified spell and killed her on the spot. Since Avada Kedavra is an unforgivable curse, many fans have argued that it is not what Molly used.
Hermione's bluebell flames
Hermione first uses it against Snape when she and Ron think he is cursing Harry's broom in his first Quidditch match. Her bright blue flames set Snape's robes alight, before Hermione scoops them up and puts them into a jar.