Resurrection Magic

"Everone cherishes something in life because it holds some monetary value. To lose it means to lose a part of oneself, experiencing a pain that surpasses any physical wound one may suffer. It's because of this that people find ways of preserving that special something in hopes of never experiencing such pain. Playing "God" is the most common method."

- Super Kami Guru

Resurrection Magic (復活魔法, Fukkatsu Mahō) is an Ancient Spell and considered to be the most forbidden Magic in all of Earthland, violating the boundaries of life and death to "preserve" that which the caster deems to be most "important". According to the Gods, the magic's existence is deemed to be a clear sign of humanity's arrogance and greed and perceived as their method of "playing God" — thus deserving rightful punishment for all that dare invokes its powers.

Though a member of the Black Arts by default because of its nature, it's not as dangerous as one thinks; as long as a person has the necessary requirements, the magic is usable by anyone and can be performed successfully without drawbacks. It's a known fact that there are many forms of resurrections throughout Earthland, thus the magic itself can be classified as either a Caster Magic, Holder Magic, or a Magic Skill — the latter of which is typically linked with an innate ability of the wielder, though such is a rarity.

Due to its effects and methods of casting, it's branded as a Subspecies Magic, sharing various similarities with Living Magic; interestingly enough, this magic is not related to Spirit Summoning Magic, although the concept of "spirit" is key in its employment.

Overview
"Death is a horrible thing to experience. All beings run away from it and naturally fear its existence. This magic, which was created for the sole purpose of warding off death, is absolute proof of that."

- A mage on the magic's purpose.

Trivia

 * This is basically based on every form of "resurrection" seen in various media, thus generic in terms of material used.
 * The article is technically canon, as Hades is seen using various types of resurrections to revive Mavis Vermillion — which led to the creation of the guild's most powerful magic, Fairy Heart.