Lemegeton Spirit Magic

Lemegeton Spirit Magic (, Renegeton Supiritto Majikku lit. Seventy-Two Demonic Dukes Summoning Magic) is a Caster Magic and Black Art that enables the user to call upon the power of Different Dimension Demons, a series of seventy-two phenomenally powerful eldritch beings with power beyond all compare, within the heat of battle.

Description
As described above, Lemegeton Spirit Magic allows the user to call upon the power of the Different Dimension Demons. It is regarded as the "Strongest Summoning Magic" (最強の召喚魔法, Saikyō no Shōkan Mahō) due to the sheer power of the summoned beasts involved; they could be referred to as a demonic strength that crushes everything in their path rather than spirits themselves- and to be fair, that comparison isn't too far off. When a magician calls forth a Different Dimension Demon, the magician's Solomon's Key generates a whirling torrent of energy from the two edges, which then manifests a red-coloured spiral portal before the user, as the energy forms enter the portal. The newly summoned Different Dimension Demon then emerges from the portal which twists shut and explodes with light, with the magical energy used to summon it, now coloured in accordance with its traits, orbiting around it.

The Different Dimension Demons are a complicated bunch- as they are creatures hewn from darkness and chaos, along with the seven deadly sins that mankind can commit in the name of self-satisfaction and harm disguised as 'good intent', they typically only contract to the lowest of scum, not limited to but including, fellow demons, Dark Magicians, corrupt politicians, serial killers, rapists, and of course, perhaps the most despicable of the bunch, furries and vegans. The reason for which is that the Different Dimension Demons feed upon the negativity within the hearts of others, allowing them to siphon their 'master's' power in order to grow stronger. Once the pact has been formed (more detail below), the user is capable of manifesting their contracted Different Dimension Demon by offering up a part of their soul for their summon to use as a medium, allowing the Different Dimension Demon to fight alongside the caster.

Depending on how much of their soul that the user gives the Different Dimension Demon, the abomination attacks and then leaves, or it will stay and continue to attack until defeated or its time runs out. The strength of the Different Dimension Demon is not affected by the magical strength of their summoner unlike other summon spirits- they are all consistently powerful, with even the weakest being beyond any S-Class Magician. The magical levels of the Different Dimension Demons are charged by giving and taking damage in battle, or avoiding an attack. After the respective Different Dimension Demon's magic is launched, the magic levels returns to the state it was in prior to the summon, meaning if the level was full before the spirit was summoned, the spirit can launch two spells in a row. When a spirit is defeated the level is reset to zero. Different Dimension Demons also have different categories of sorts, which fall under the basic summoning conditions from their owner.

Different Dimension Demons
The "Different Dimension Demons" ({{Ruby|七十二魔公の冥府|ディファレント・ディメンション・デーモン, Difarento Dimenshon Dēmon lit. Seventy-Two Demonic Dukes of Hell), or just DDD ({{Ruby| ディー・ディー・ディー|ＤＤＤ}}, DīDīDī) are eldritch creatures, from, well, another dimension which is referred to as the Diabolus Dimension ({{Ruby|冥府の魔王|ヂアボロス・ディメンション}}, Diaborosu Dimenshon lit. Sheol of the Demon Kings); a rather stereotypical black and bleak type of hell; the sun is always hidden behind endless dark storm clouds. What little vegetation there is, is withered and rotting and some are mutated into an "evil" variety that's covered in sharp thorns and/or liable to eat people. Poisonous marshes and swampland are also quite common; with frequent volcanoes and/or ice storms. It looks a bit like something called "Mordor" from some completely obscure series, which is rumoured to be difficult to walk into on foot. In any case, the Different Dimension Demons are said to be beings born from truly evil hearts long ago, hewn by the seven deadly sins that mankind can commit in the name of self-satisfaction and harm disguised as 'good intent'; they are literally evil incarnate, taking upon a demonic form.

Generally, the Different Dimension Demons, due to being born from malevolence and chaos and taking upon an incomprehensible form, are tremendously powerful entities, possessing all sorts of abilities they had when theoretically alive as possible humans, and much, much more. Indeed, the strength of the Different Dimension Demon is proportional to the depth of the evil from which it was born. The darker the being that transformed into a Different Dimension Demon, the more powerful and more monstrous the resulting being will be. However, in terms of powersets, the Different Dimension Demons are known to be wildly variable, though they are all consistently described as "completely alien" in both terms of sheer strength and magical power, being stated to have "the power of kings who subjugate alternate planes", as well as morality, seeing everything in 'bacon and neckties' rather than 'right and wrong', more or less- of course, this is minus actual bacon and neckties, though they'd probably like bacon and look spiffy as hell in neckties. The main goal of each Different Dimension Demon is that of absorbing more tainted souls to gain more power, acting in-line with their very nature while seeking to spread their influence wherever they can.

Furthermore, as beings of pure evil, the Different Dimension Demons are able to take possession of other beings or even inanimate objects, overriding their wills and using their bodies as living meat-puppets, granting them immense dark power and often reshaping their very forms to suit their purpose. In regards to their interactions with other sentiment beings, Different Dimension Demons are generally quite notoriously xenophobic, showing false concern and faking affection towards others in order to manipulate them more, even when contracted, to devour their soul and gain more power and egging those contracted to them into doing morally dubious actions to make their soul tastier. Their racism is so outrageous, being referred to as "Demon Nazis", to the point that Baal states to his contractor, "This is merely my own personal philosophy, but I believe we should display our intolerance for puny humans on every level and take away their civil rights." Through their reality-altering properties, a Different Dimension Demon is capable of tearing open an inter-dimensional pathway to another dimension of their choice once they have gathered enough souls and wreak havoc, which is their ultimate goal, absorbing the souls of those they slay in the process and turning the dimensions into their "Dark Paradise".

Contracting
The Diablo Deal (, Diaburo Dīru lit. Demonic Transaction) is the name of the power that grants a Different Dimension Demon the ability to link with a sentient being. As the Different Dimension Demons are beings composed of pure negativity, when not in their home, the Diabolus Dimension, they require constant sustenance in the form of Souls of Desire (欲望の魂, Yokubō no Tamashī) in order to survive and gain even more power which goes towards their goal of using their reality-altering powers in order to invade other dimensions and turning them into their personal evil playgrounds. To this end, they will seek out 'evil' humans and make contracts with them, referred to as "Diablo Deals"; as a sentient evil living soul is about equal to one thousand non-sentient evil souls. A Diablo Deal, as the name would ever-so-helpfully indicate, involves a Different Dimension Demon forging a "Clavicula" (, Kurabikura lit. Contract with the Dark Demon World) with another, sentient being; it generally doesn't matter about the nature of the contracted in question, as even the puny, worthless beings known as the Exceed can be forced into a pact by the Different Dimension Demons.

When working out conditions for the Different Dimension Demon to ally themselves with the magician seeking out their power; when the pact is complete, the Different Dimension Demon is required to grant the contractor virtually any wish they desire, with almost no limitations on the wish; once sorted out, the magician is granted a Solomon's Key (, Soromonzu Kī lit. Hellgate Manifestation Key), which works similarly to that of a Gate Key from other Summon Spirit Magics in order to summon the Different Dimension Demon from the Diabolus Dimension. However being sly creatures by their very nature, nearly all demons will search for countless loopholes which can be casually abused, as well as using literal wordings and interpretations of a word's meanings unless otherwise specified, meaning that more often than not, the Different Dimension Demon will get the last laugh. However, it is shown that in certain, though rare, cases, those whom are contracted are capable of carefully wording their wish so that they can gain a great deal from this supposedly almighty cosmic horror while the Different Dimension Demon gets the short end of the stick, and making it worse for the latter is that until the contractor dies, succumbs to their demon's manipulations, or contracts with yet another Different Dimension Demon, they cannot break the contract themselves.

Common Powers and Abilities
Darkness Magic (闇の魔法, Yami no Mahō): Darkness Magic is a Caster Magic which draws on the negative emotions of the user and manifest it in a physical form, the element of Darkness. While Darkness Magic is not inheritably evil in a sense, it does give off a feeling of despair to opponents that fight against a user of this magic due this magic releasing the malefic nature of the opponent out into the world. It is said that this magic was the one of the first attempt at creating a Black Art, though it was later used as a base for later Black Arts that came to exist. This Magic allows the user to utilize destructive abilities; it is triggered by going by the opposite of the 'magic = feelings' concept—by fuelling their magic with negative feelings, the user is capable of initiating the usual fusion of eternano and magical power, only manifesting magical power in a dark and malefic nature; this is known as Darkness Magic. With this type of magic, the user has absolute dominance over the element of shadows; and thus, darkness, night, and any dark-related elements. This Magic has a physical form used for destroying objects, blocking enemies' attacks and picking up objects; consistently, it is a pulsating crimson. When using it, the user more often than not shapes their attacks into the form of waves or arcs of shadows, which they can use in various ways. The shadows can be channeled to a variety of effects, both as an absence of light and a solid substance: one can also control and manipulate the beings that exist there, create and dispel shields and areas of total darkness, create a variety of constructs and weapons and, teleport themselves through massive distances via shadows; being able to take out multiple opponents with just one attack and capture people, sinking them into the depths of their shadow. The Different Dimension Demons have shown to be capable of bringing out an entirely different level of darkness manipulation, due to their origins as beings of pure malice. Indeed, generally the Darkness Magic displayed by the Different Dimension Demons is a pulsating scarlet alongside the pitch-black stygian hue of energy, smashing its way through opposing sources of darkness and absorbing them to bolster its power without fail. The darkness is either complete, effectively rendering useless all light sources within the area, or hollow to allow the interior to be lit.
 * Grim of Phantom (, Gurimu Obu Fantomu lit. Devoured by Darkness): Grim of Phantom is a Darkness Magic spell which is unique to the Different Dimension Demons; it revolves around enthralling their targets and taking possession of them; this can only be used when not summoned into the physical realm yet. When initiating Grim of Phantom, the Different Dimension Demon uses their Darkness Magic as a parasite of sorts by generating an electromagnetic field in order to stimulate areas of a creature's brain and limbic system. This results in the target suffering headaches and hallucinations as the Different Dimension Demon slowly worms their way into the user's mind and feelings, seeping into their contractor's mind or the minds of anyone else within the vicinity, using their spirit form to dive into the target's mind and soul, allowing the Different Dimension Demon to possess their target, leaving their body nothing but a meat-puppet; each use results in the Different Dimension Demon subtly corrupting them and tainting their soul slowly, but surely, until they are ripe for devouring. Once the Different Dimension Demon possesses somebody, their body changes ever-so-subtly; as their hair becomes a lighter texture, their skin becomes rather tan, and finally, their eyes turn from crimson into a haunting deeper scarlet with black slitted pupils and pitch-black sclera. While possessing anyone, the Different Dimension Demon can use any of the abilities that were inherent to that being's body; not limited to but including Magic, Curses, equipment, and physical abilities; and in addition to this, the Different Dimension Demon can harness their own powers, albeit limited so the body will not tear itself apart from the sheer amount of power that the demons have, though more callous demons do not take this into consideration.

Immense Physical Capabilities: All Different Dimension Demons are known to be overwhelmingly powerful in the physical department; most of them are far beyond Celestial Spirits and even stronger spirits. Each of them possess sufficient superhuman speed, strength, and durability- indeed, they can simply blitz through almost any opponent with ease. For example, at the lowest power outputs, a Different Dimension Demon is capable of uprooting a small house with a single hand and throwing it at horrifying speeds, with their bare hands being able to smash through magical defenses just by punching and kicking at them. The Different Dimension Demon are capable of jumping large distances in a single bound- able to apply that speed to their vision as they can view things in high speed, enabling them to dodge attacks and predict the actions of others. The Different Dimension Demon can withstand great impact forces, falls from great heights, and extremely powerful magical weapons without sustaining injury. They are stated to be less of a being and more of a force of nature, bringing immeasurable destruction to those who oppose them and their ideas of 'fun'.

Nine Dark Kings
The Nine Dark Kings (九暗王, Kyūanō) are the "spirit kings" of the Lemegeton Spirit Magic; they are the most powerful physical embodiments of the four directions. The Nine Dark Kings are noted to be the strongest of their race, with all of them as strong as the Celestial Spirit King, if not even stronger, and the rest of the Demonic Dukes are under the power of all nine. Generally, each one of the Nine Dark Kings has around seven of the Demonic Dukes under their 'protection'; with each being capable of administering punishment to unruly Demonic Dukes. In reality, unlike the Demonic Dukes, the Nine Dark Kings are far more calculating and pragmatic, focusing on the long-term plans of creating their "Dark Paradise", and as such, will not hesitate to reign in their subjects forcefully to prevent them from making a mess of the dimensions. Generally, in order to summon a member of the Nine Dark Kings, the magician must be in possession of a certain tool, and their contract with their Different Dimension Demon must have been broken, though it is not unheard of for magicians to simply form "normal" pacts with a member of the Nine Dark Kings.

Ten Counts
The Ten Counts (十伯, Jūhaku) are directly below the Nine Dark Kings on the Different Dimension Demon chain; they are said to each being far more powerful than a golden key Celestial Spirit.

Six Princes
The Six Princes (六王子, Rokuōji) are in the middle of the Different Dimension Demon hierarchy, with each member being slightly more powerful than a golden key Celestial Spirit.

Nine Presidents
The Nine Presidents (九長, Kyūchō) are on the lower end of the Different Dimension Demon hierarchy, with each member being as powerful as a golden key Celestial Spirit.

Fourteen Marquis
The Fourteen Marquis (十四侯, Jūshikō) are the second lowest on the Different Dimension Demon hierarchy, being considered inferior to that of a golden key Celestial Spirit.

Twenty-Four Dukes
The Twenty-Four Dukes (二十四公, Nijūshikō) are the bottom of the Different Dimension Demon hierarchy, as all twenty-four demons are about only equal to that of a Silver Key Celestial Spirit.

Trivia

 * If one couldn't tell, the Different Dimension Demons are based off of the, more specifically, the Ars Goetia, a real-life grimoire on demonology.