Black Spirit Slayer Magic

Black Spirit Slayer Magic (黒人精神殺人者 Kokujin seishin satsujin-sha) or more easily known as simply Darkness Spirit Slayer Magic (ダークネススピリットスレイヤーマジック Dākunesusupirittosureiyāmajikku) is a Caster Magic, Lost Magic and Spirit Slayer Magic that utilises the two combined elements of Darkness Magic and Shadow Magic collectively to be able to rise the Spirit Slayer's capabilities to matching a Spirit, beings known to utilise great amounts of power that the race have the right to be able to be compared to the likes of Gods and Dragons. Being a Spirit Slayer Magic, which are known to be rarer than Devil Slayer Magic, Dragon Slayer Magic and even the notorious God Slayer Magic, Black Spirit Slayer has only ever been utilised by two known beings that are known for their use of the mysterious magic. Black Spirit Slayer Magic is probably one of the more rarer types of Spirit Slayer magics there is, as the only known Spirit of this ancient magic mysteriously vanishing with many saying that it was it's own student that committed the deed, leaving them as the only known living user of this elusive mage. Once another spirit that is able to utilise this strange magic as well comes along, Black Spirit Slayer Magic will remain as one of the most rarest types of Spirit Slayer Magic there is.

As said, Black Spirit Slayer Magic utilises the aspects of Darkness Magic and Shadow Magic to match the grand power of the spirits, allowing the user of Black Spirit Slayer to defeat and even kill these strange creatures that have mistakenly taught their own magic to the human race. With this magic in their arsenal, users of Black Spirit Slayer magic will be able to generating, manipulating and consuming the elements that the magic is based around in order to strengthen and further their power to become even stronger than they were before. As this is said, Black Spirit Slayers will have total control of anything black such as shadows and such, sucking in the black aspects around them in the environment to gain extra power for their abilities. To add to this even further, Black Spirit Slayers also have the extreme ability of using their negative emotions which they can naturally generate to strengthen the power instead, with many utilising both ways at the same time so that they can cast even stronger spells that are said to bring massive amounts of damage. Black Spirit Slayer magic can be considered one of the more easier Spirit Slayer magics to strengthen due to the natural tendency for humans to always feel some sort of negative emotion, which will then power up the Black Spirit Slayer Magic power.

Description
Just like all Spirit Slayer magics, Black Spirit Slayer gives the user of this magic total control and manipulation over the base element that the Spirit Slayer Magic is formed upon, which in this case is the element of Black such as Darkness and Shadows, which can be very deadly and powerful in their own way when they are used right by the capable users, who have total dominance over the element that they can make it do whatever the user wants, provided that the user is capable with the magic themselves. Users who have learnt a Spirit Slayer Magic are more than capable of and even entitled to defeating and killing spirits than any other kind of Elemental Slayer Magic user there is, even though one would not really need to have Spirit Slayer Magic to do such an act as there have been several accounts of many kinds of Slayer Magic users that have been able to take down beasts that are not the sole being that they were trained to kill, meaning that also can apply to Spirit Slayer Magic users who can be capable of slaying Demons, Gods and maybe even Dragons but their main focus is to take down the dangerous race of Spirit beings. Spirit Slayer Magic was taught to humans by the Spirit race themselves, and with many variants of Spirits out there in existence, there are tens to hundreds of Spirit Slayer Magics that are currently practised all over the universe and many realms connected to here. With very few Spirits willing to teach their magic to the humans of Earth Land and beyond, it has made it difficult and almost extremely rare to find a mage who has learned and fully mastered the art of Spirit Slayer Magic, as to top things off as well there have been very little humans who have been willing to work with these open spirits to learn the deadly magic for themselves. Humans or beings who have been able to finally learn and practise the Spirit Slayer Magics are referred to as Spirit Slayers (滅霊魔法使いスピリット・スレイヤー, Supiritto Sureiyā lit. Spirit Destroying Magician) and Spirit Charming Magicians (霊使いの魔導士, Reitsukai no Madōshi) in recognition of their rare talent and capability for matching the supreme power of the Spirit race. Compared to other Slayer Magics, it seems that the only way to attain the magic is to learn it through a Spirit who knows the magic, making this magic type seem to only produce what would normally be called First Generation Spirit Slayers. The thing with Black Spirit Slayer Magic however, is that the only known spirit that had brought up a student and taught them it's ways has now seemingly disappeared meaning that the art of Black Spirit Slayer Magic is truly lost to the times, even though strangely the human user of Black Spirit Slayer Magic operates as if their spirit was still alive, meaning that this magic has the ability to seal and contain their victims into other planes of existence which only the darkness can reach, showing that this spirit is still alive for many to learn. In this Spirit Slayer Magic, emotions is one of the biggest factors in using one's power which is due to the fact that Black Spirit Slayer Magic utilises the negative emotions in order to fuel their power, but with the natural edition of the Pendulum of Souls (振子の魂, Furiko no Damashī) which is described as their Magic Origin is swinging back and forth like a pendulum, as magic is fuelled by the thoughts and feelings of the wielder, the wielder of Spirit Slayer Magic is known to have their emotions affect their elemental power on a much greater level and scope [1], emotions is definitely the Black Spirit Slayer Magic user's most powerful weapon when using this magic. Strong emotions power the abilities of the spells being used and even allow Black Spirit Slayers to unlock new and improved abilities that they haven't found before due to lack of correct experience and strength of the user's will to do so. Speaking of negative emotions powering up the Spirit Slayer's power, the natural automatic trigger of a Spirit Slayer's enhanced biology which does not need the use of sucking in the element around them as they can just absorb it without effort into their body, users of Black Spirit Slayer Magic can not only produce negative energy from their negative emotions which in turn powers them from the inside but this added automatic absorption can allow the Spirit a slayer to consume anything black around them as well as the negative emotions from people or beings in general that are near the Spirit Slayer, meaning that if there was an angry person right next to the Black Spirit Slayer, the Spirit Slayer is constantly getting stringer and stronger just being near them, making them the very deadly foe to deal with. Users of Black Spirit Slayer Magic tend to be more of someone who can trigger the negative emotions of another person, such as killing a close one to them, taunting them to demean them or just plain trigger them in general anyway they can, these Spirit Slayers are probably one of the most dangerous Spirit Slayers that one could be able to encounter. The more power that the user is able to get, the more that their Pendulum of Souls will proceed to match and surpass it's own power, becoming ever more powerful than it used to be as well as adjusting to the power of the user them-self and adapt to their ways and can even evolve into incredibly lethal attacks and spells that represent the caster's power and skill with the Spirit Slayer Magic art. Some say the only way to be able to defeat a Black Spirit Slayer is to constantly keep calm with their mind clear so that emotions do not get the better of them, but to most of the humans and beings on Earth Land, this is incredibly difficult to even do due to the natural habit of the human or said race. Depending on who the Black Spirit that is the one teaching, it is said that once the Black Spirit has contained themselves into their student's body, the student will proceed to feed off the negative energy off the contained spirit within them, just adding to this whole mess of powering up.

The appearance of the spells is similar to how all Spirit Slayer Magics are, and this being Black Spirit Slayer Magic the magic energy that makes up these spells is the combination of a strong bold black with the mixture of silver following alongside it, matching how all Spirit Slayer Magic spells are meant to look like. Just like how Lightning Slayers and Fire Slayers have their respective element as the excess energy that is used up when casting the spell like how lightning sparks will buzz around attacks involving Lightning attacks and such, Black Spirit Slayer Magic attacks will involve black smoke drifting off the energy attacks just as how fire will spark up during Fire Slayer attacks. The Black Spirit Slayer element attacks are actually very, very dark compared to others such as Darkness Dragon Slayer Magics, Darkness Devil Slayer and maybe even Darkness God Slayer if powerful enough. One can actually utilise the darkness of these spells as the more that the user masters the art, the better and better that the spells of Black Spirit Slayer Magic become extremely useful against users of Light Magic due to the darkness of the black having absorbed the light touching it. Supposed users of Black Spirits Slayer Magic will attain the ability for their Black Spirit Slayer Magic to absorb 0.035% of the light emitted onto them, but the actual Spirit teacher and it's student have been describe to completely absorb any light touching the spell, meaning that their Black Spells have been able to soak up the element of the Light attack making the spell useless against the caster. Like said before, the more emotions that the user can generate the more powerful the spell will become depending on the strength on the emotion, but how this effect and status can be seen is through the spells themselves as they will become darker and darker the more the user becomes better at the magic, and looking more and more brutal as well. Being the element that is without the heat of light and similar like heat, Black Spirit Slayer Magic spells can cause the temperature of the spells to drop to numbers such as −89.2 °C (−128.6 °F; 184.0 K), even going further to match the blistering cold temperatures of other Cold related elemental magics. This makes it almost as an Ice Slayer Magic however just without the freezing and ice aspect, as well as it being darkness and not icy blue, still putting some difference between it and Ice Spirit Slayer Magics and related. There is millions of possibilities that users of Black Spirit Slayer Magic can do with the magic, ranging from blinding people, sneaking attacks on enemies and even using the shadows and darkness to solidify and turn into dangerous obstacles, Black Spirit Slayer to many is the bane to of many Spirit Slayer Magics and a special Lost Magic that many people have wished to be il-legalised as soon as it was discovered, many governments from all around the world having labelled the special Spirit Slayer Magic as Forbidden to be used within the country's ground though still remaining unknown to other governments from all around Earth Land. Like all good Spirit Slayer Magics, the power and knowledge of the Slayer Magic forces the body of the student learning the Ancient Magic to slowly change their biology in order to adapt to these special enhancements that appear to the user of the magic, things such as Enhanced Senses that include extremely well done Olfaction that can smell the scent of blood or any other scented liquid on a shirt, which like again said before can even be smelt if the shirt was recently cleaned to perfection as if it wasn't damaged at all, even having the capability to catch the scent of a forest fire that could be kilometres away from the Spirit Slayer's position. Audioception, which grants them a minor form of extra-sensory perception that allows them to detect movements through a form of clairvoyance, and ophthalmoception, bestowing upon the wielder of Phoenix Slayer Magic the ability to see things with pin-point accuracy even if it's a fair distance away [1] are more special talents that the Spirit Slayer acquires when having learnt the magic but what is more unique to the Black Spirit Slayer even though it is already mentioned elsewhere, is that Black Spirit Slayers are totally invulnerable to darkness, such as having the ability to see into pitch black rooms with ease which makes sneaking up on targets easier. Black Spirit Slayer Magic also makes the user totally resistant against Black attacks such as Darkness Magic attacks and Shadow Magic attacks, leaving them unscathed and even powered up due to the Spirit Slayer's tendency to absorb the magic energy with their presence rather through their mouths like consuming it. Now being a Black Spirit Slayer Magic, anything Black is fair game for consumption and invulnerability to the Black Spirit Slayer, even going as to withstand some of the effects of the Black Arts, which to many Lost Magics is a taboo capability but to Black Spirit Slayer is not thanks to how powerful the whole Spirit Slayer Magic tree is, as the Black Spirit Slayers have been known to withstand even the deadly and incredible effects of Death Wave from Death Magic from the Black Arts, though they would describe the taste and feel of this magic to be unnatural and tend to try and stay away from this mysterious magic even though they can literally absorb it like Natsu Dragneel's dragon scale scarf had down with Zeref Dragneel's own Death Predation. Another ability that Black Spirit Slayer Magic users can inherit is the ability to a use sort of like a Shadow Form that allows them to sink and swim with the shadows, as they effortlessly glide through the area as a shadow free from any magical attacks and physical attacks that anyone might use against the swimming shadow, based of Shadow Magic's own Shadow Form, who are able to enter a strange void known as the Shadow Space, ''a pocket dimension that users who use their Shadow Magic capabilities to merge their shadow with another actually enter to travel through without coming into the actual contact with anything else. Though the Shadow Space is still relatively mysterious to even the smartest of Earth Land's theorists and magical experts, there are some who have used this pocket dimension to their advantage as many have begun using their Shadow Magic spells to drag unweary civilians into the black world of the Shadow Space, with no way of leaving they are trapped to spend the rest of their days in a dark empty void. In the Shadow Space, all Shadow Magic users can reach their ultimate potential as all the void really is, is just shadows everywhere so the many possible things that they can do here is endless. Though in order to travel through the Shadow Space for this transport that many Shadow Magic users do by merging their shadow, they will have needed to train their body under massive amounts of pressure, as not many mages can be able to survive long periods of time within the Shadow Space. Though users such as the Black Spirit Slayers who has trained their body intensely to survive the harsh conditions of the Shadow Space are able to stay as long as they like as their bodies have adjusted to the critical yet bland environment that the Shadow Space has to offer.'' [2]

Abilities that involve the Black Spirit Slayer to train their body and magic even more seem to be the more useful and powerful displays of what they can really do as a Black Spirit Slayer, with more advanced abilities coming to those who slowly progress their skill as they rise up on the talent ladder. The abilities that have been mentioned before hand are the unnatural abilities that all Spirit Slayers get when they learn the magic, and so all Black Spirit Slayers are able to utilise these capabilities, and further their effectiveness as time goes by. But those who finally grasp the basics of the Black Spirit Slayer Magic are able to use abilities such as generating shadows to suddenly coat him in distorting black shadows that effectively conceal any part of their body, using this capability to hide their identity and when becoming more talented with the art can conceal their whole body and outfit so that they remain concealed entirely. When Black Spirit Slayers improve their ability with the magic, they can also preform this distortion appearance to other people around them, with the number of people they can cast it on increasing as they become more and more power and skilled the Black Spirit Slayer becomes. Progressing through the skills and abilities that the Black Spirit Slayers can do, advanced Black Spirit Slayers can have the ability to sort of use the shadows as portals that can transport them all over the place if they must. This alludes to the Magic Phenomenon of the Shadow Space where users of Black Spirit Slayer Magic can actually use the Shadow Space to teleport between shadows, sinking into one shadow and appear on another, as if they actually teleported or it was just a portal connection between the two. Any shadow is fair game for the Black Spirit Slayers as they can also jump right out of shadows that appear on a victim's body, adding to the colossal power that the Black Spirit Slayer can have. Mode advanced users of Black Spirit Slayer have this very unusual ability that most Spirit Slayers don't, or any Lost Magic has either which is the ability shrink the Black Spirit Slayer into a miniature size as well as create this extremely black lacrima around them as they contain themselves within the crystal ball, which is also highly indestructible and can withstand any amount of force up against it that it could be used to defend the Black Spirit Slayer from any attack. However, the catch with using this ability is that once the user has suddenly used this ability, they will have to remain there for a total of five days or more depending on when the Black Spirit Slayer will choose, having no way os escaping their lacrima cell unless the five days is up or more in which the ball will explode with a blast of darkness, allowing the Black Spirit Slayer's size to enlarge and go back to normal. This ability was made for the use of meditation and quiet asylum from the outside world, but protection and infiltration is a pretty good way of using it provided that the user of this ability is very patient. Black Spirit Slayer is possibly at the same level of rarity as the Dragon Slaying magics, due to the fact that the only known Black Spirit had disappeared and left only it's student to carry on developing it's work, making them the only known user of the magic yet their name is lost to the ages as they remain a mystery to records of the world that mention the famous Spirit Slayer Magics. As one could have guessed by now, Black spirit slayers are more powerful when in black areas such as pitch black rooms, caverns, and even the outside world at night, making this the suitable magic for those who are active during the night time hours. Masters of Black Spirit Magic have the ultimate power of moving the shadows around them, in order to make the room black even if it is lit up, giving them a power source to power up with though this is only done by those who are spiritually connected to their Black Spirit Slayer Magic and have become one with the shadows. The limit to doing this is that humans who try and attempt this ability will receive large amounts of pressure on their body the more that they continue doing this ability, however they can't do this forever unless they are capable of continuously regenerating their body, high immense durability to withstand the damage that they are putting onto their body or if they are a spirit themselves, but if someone of not those capabilities preform this for too long they will be sure to be crushed and die. But the endless possibilities that they can do are just amazing, using the shadows to spawn armies of soldiers that will charge out simultaneously as they head for the target, to giant black beasts capable of obliterating large structures and the such. Even creating tentacles and whips to lash out to attack numerous opponents and protect the Black Spirit Slayer, similar to Black Spirit Slayer Magic's Trance, this is the best way of being able to use a Trance like ability but moving around as well, though less powerful than what Trance can really do. As the opposite of light and all it's sources, Black Spirit Slayer has the ability to wipe out any light source around them with just the flick of their wrist, and if they are matching or surpassing the power of another such as a Light Magic user of Fire Magic user, can be able to distinguish the source and cause them to become defenceless without their magic as the Black Spirit Slayer carries on with their attack. This has what made Black Spirit Slayer one of the more evil magics in the world, from it's dark and evil base magics, it's association with black, the evil characteristics of the Black spirit Slayer Magic users, the ability to take out the light from the world and bring forth darkness, it is a wonder to why Black Spirit Slayer is not banned from the entire world. Though only time will tell if the last Black Spirit Slayer Magic user will change the world's view on this evil magic and show the hidden but absent light that dwells within the Black Spirit Slayer Magic itself.

Basic Spells

 * Black Spirit's Harangue
 * Black Spirit Fist
 * Black Spirit Charged Palm
 * Black Spirit Metal Hoof
 * Black Spirit Reaching Blade

Advanced Spells

 * Black Spirit Shadow Jump
 * Shadow Clones
 * Spirit Eater
 * Living Shadows
 * Vile Black Tempest
 * Black Tentacle
 * Black Spirit's Sins
 * Lust
 * Greed
 * Wrath
 * Gluttony
 * Pride
 * Envy
 * Sloth

Master Spells

 * Human-Spirit's Vengeance
 * Cross Strike
 * Eternal Darkness
 * The Horseman of Death

Spirit Slayer Secret Art

 * Black Rose: Dark Union
 * Black Rose: Elemental Bane
 * Black Rose: Black Death

Trivia

 * Permission to make this was ganted by Per.
 * [1]: Was taken from the Spirit Slayer Magic, with all credit going to Per.
 * I've waited too long to make this.
 * [2]: Taken from Shirudo Mausu, Shadow Magic Section.