Evocation Magic

Evocation Magic (喚起魔法 Kanki Mahou') is a Caster Magic and Lost Magic that employs the summoning of powerful dark creatures from the Shadow Realm, some of them even former celestial spirits. Once summoned, the creatures will form a contract with the caster and attempt to grant a wish in return for something, though most of them take the caster's soul as payment.

Description
This magic works by using rituals, incantations and in some cases sacrifices in order to summon beings from the Shadow Realm- a dimension in which many powerful creatures roam, some even former celestial spirits that have committed heinous crimes. Crimes that make too dangerous to be left wandering anywhere else. Once summoned, the caster is required to form a contract with the spirit in question. Unlike Celestial Spirit Magic, contracts are valid only until the desire of the caster is sated and the contract goes both ways. Contracts can involve a third party, but the requirements become even greater. More often than not, the creature/spirit will ask for the caster's soul, absorbing it and increasing their magic reserves. There are some restrictions such as a true resurrection of the dead or immortality, though alternatives can be achieved. The requirements for summoning depend on the power of the summon that the caster wishes to evoke.

Evocations

 * Seal of the Witness (証左封印 Shousa Fuuin'): A seal that is branded to those that have formed a contract, both the human caster and Shadow Realm summon.

Solomon the Undead King
Solomon is known as the Undead King (不死王 Fushiou) of the Shadow Realm and holds power over the Realm of the Dead- one of the four realms. Summoning him requires 100 human sacrifices and he will only respond to those he deems worthy, those who`s will to live and determination to win are unyielding. He was summoned by Verethragna.


 * Blessing of the Undead King: This spell is only granted to a chosen few Solomon deems worthy. To be blessed by him the chosen one must die and then be resurrected using the king's power.


 * Virtually Invincible: Those resurrected do not need food, drink, oxygen and cannot die by physical damage or by normal magical attacks. Although because they are, for all intents and purposes dead, their healing abilities are near non-existent.


 * No Magic: Being dead, those affected do not have any magic within their bodies and as such cannot use it. If they wish to use magic however, they must acquire it through a different means.


 * Sustenance: Those affected can only sustain themselves by consuming parts of the living. In particular, the human heart once a week, or the contract becomes void and the soul of the caster is taken by Solomon.