The world of Harry Potter is ripe with many powerful wizards; some who belong to the side of good, while others who dabble in the darkness. However, one wizard that has had his experience with both sides of the spectrum is Severus Snape, and he is undoubtedly one of the most powerful wizards of all time. Having died at the age of just 38, his early demise was a definite shame. He could have easily become one of the most powerful wizards of all time if given the chance—maybe even more powerful than Dumbledore.
A master potion maker, adept at legilimency and occlumency, the dark arts, and the defense against it, Severus Snape was brilliant in every sense of the word. However, very few fans know that he had an acumen for magic since his school days at Hogwarts and is solely responsible for multiple innovations in magic, a feat unheard of from someone so young in age. The Half-Blood Prince not only mastered the intricate and logically demanding task of spell-creation at such an early age, but he also experimented with various preset principles of potion-making to create better concoctions. While there are many things that fans didn't understand about Snape, it cannot be argued that he was a genius.
Spell creation is a tedious and even dangerous task. The fact that Severus Snape was able to create so many spells during his formative years in school is an incredible feat in itself. Therefore, mentioning the first and probably the most innocent spell, or rather a hex, which Snape had created during his school years is the simple toenail-growing hex. Harry later discovered it in Snape’s copy of Advanced Potion Making.
This hex that Harry had in fact tried on Vincent Crabbe, makes the victim’s toenails grow alarmingly fast, thereby creating a hilarious effect, albeit an embarrassing one for the victim.
An advanced potion that is only taught to N.E.W.T students during their sixth year of potion-making, Severus Snape bettered the Draught of Living Death. This potion allows the drinker to enter into a deep slumber that closely resembles death. Snape had made important alterations to the making process, which included instructions to crush the Sopophorus bean using the flat side of the dagger rather than cutting it. This process guaranteed a better release of the bean’s juices. Furthermore, he advised stirring the draught once in a clockwise manner after it has been stirred in a counter-clockwise manner seven times.
Snape’s instructions were so accurate that Harry won Slughorn’s praise during his first sixth year potion-making class. Harry impressed Slughorn enough to win the bottle of Felix Felicis with Snape's recipe for the Draught of Living Death.
As many memes point out, Snape might have been the true hero of Harry Potter. However, during his initial school days, he was at loggerheads with the group known as The Marauders, led by James Potter, a group that pulled innumerable pranks on the Half-Blood Prince, making many fans wonder who deserves more hate.
Created for his enemies, Levicorpus hoisted the victim's body up by the ankles. It translates to "lift the body," derived from its two constituent Latin words Levare and Corpus. This spell can be cast through verbal as well as non-verbal incantations and was created by Snape during his years as a student at Hogwarts.
A counter-jinx to Levicorpus, Liberacorpus derives its meaning from the Latin words liberare, which means "to free," and corpus, which means "body." As is the case with most of the spells that Snape had created, he always kept another to counter them.
This quality in Snape makes fans realize that he understood that even innovation requires checks and balances; a trait that proves him to be a genius who deserves the highest respect.
Snape is a master potion maker, and, therefore, it is only natural that he would have intricate knowledge about poisons and how to counter them. His immaculate knowledge about poisons is showcased when Harry recounts an inscription made in Snape’s copy of Advanced Potion Making and shoves a bezoar down Ron’s throat after Ron got poisoned during their sixth year in school.
Ron had mistakenly drunk the oak-matured mead laced with poison, which Horace Slughorn had intended as a gift for Albus Dumbledore. Harry’s quick recollection helped save his life; all based on Snape’s immaculate knowledge of poisons.
A simple charm from the looks of it, the Muffliato is immensely helpful when cast by someone who doesn’t want their conversation to be overheard by eavesdroppers.
The charm was created by Snape sometime between the years 1971 and 1978 and its usual effects include a constant droning or buzzing sound in the ears of anyone who is around the person who has cast it. This makes it impossible for other people to overhear the caster’s conversation. The charm was even taught by Flitwick during his class at Hogwarts School of Witchcraft and Wizardry.
While there are many memes that prove Severus Snape to be a comedic genius, some of his invented-spells also imply the same. One such spell that seemingly has hilarious effects is Langlock. A spell created to neutralize the victim’s ability to speak, Langlock essentially makes the victim’s tongue stick to the roof of their mouth.
However, this spell also has practical uses, one being the fact that neutralizing the opponent’s ability to speak incantations during duels will grant the caster valuable time and opportunity to counter. Harry famously uses this spell on both Peeves and Argus Filch during his time at Hogwarts.
Apart from altering the recipe considerably, Snape also included the instructions to add a peppermint sprig to the concoction in order to counter the side effects of nose-tweaking and singing that the elixir is known to cause.
The literal meaning of Sectumsempra can be understood from the Latin words that constitute it. Sectus meaning 'lacerated' and Semper meaning 'always' roughly sums up the effects that the spell can have on its victim. This powerful curse causes deep lacerations and hemorrhages on the victim’s body that never seem to close. Classified as a curse reserved 'for enemies' in Snape's copy of Advanced Potion Making, it slowly bleeds its victim dry.
神锋无影的字面意思可以从构成它的拉丁单词中理解。“Sectus ”的意思是“撕裂”，“Semper ”的意思是“永远”，大致上可以看出该法术对中咒者的效果。这个强大的咒语会使中咒者大出血，而且似乎永远不会愈合。在斯内普那本《高级魔药制作》里被列为“专为敌人”的咒语，它会慢慢地把血榨干。
The effects of Sectumsempra are first witnessed when Harry uses the spell against Draco in the boy's bathroom on the sixth floor of Hogwarts. The fact that Snape was able to create such a powerful curse during his school years, speaks volumes about his magical genius.
Snape is not someone who would create a curse without having a proper counter-curse in place. A fact about Snape that book-fans would know is that he was a master at the dark arts even from an early age, creating curses and counter-curses on the fly. Therefore, the existence of Vulnera Sanentur, which literally means "to heal wounds" in Latin, and the fact that only Snape has ever used it in both the original books and the movies, is nothing to be surprised about.
The only spell known to heal Sectumsempra, the incantation Vulnera Sanentur needs to be repeated thrice in a sing-song manner. The first time it is spoken, the victim’s blood flow eases, the second time stitches the wounds, and the third helps them to heal.