Semidei

Semidei are a type of holy being which is a human or part human with the soul of a Fae. They are destined to protect the universes from the Semidaemon.

Culture
Among Elklorians Semidei are considered mythological and are usually referred to how wizards may be on Earth. Some people are said to have been Semideus, but these ideas are treated as fables.

Known Semidei
One of the protagonists of the story, Khioneus Nevula, usually called Khi, is a Semideus. He discovered at the end of the the book from his POV. Another known Semideus is Myrddin Wyllt, usually called Merlin. He is historically the most powerful wizard and a great diviner.

Acutorias Nevula is usually referred to as a Semideus by people simply because of his historic power, but he may not be, though this is unknown. It is likely he is, as the idea of Semidei even existing proves that myths and fables even in Elkloria may be true.

Powers
Holy Magic: Semideus magic seems more "holy" than normal magic, and all Semidei seem to be wizards of some kind; it is unknown whether nonmagicals can be Semidei.

Magic Nullification: Semidei can nullify enchantments and curses. It is unknown whether this is by will or by accident.

Infinite Magic: Semidei can create a source of infinite magic which can be extracted to open a seal created by the Fae themselves

Magemotican Form : Semidei can change into a form like a Fae called the 'Magemotican Form', with enough power to defeat an Immortal Demon. This has limits as the amount of power used in this form is proportional to the human form and can kill the human form, and it will cause intense pain afterward.

Divination: Semidei can see the future while unconscious after transformation, which means their "unconscious state" is more akin to sleep.

Trivia

 * Semideus is Latin for demigod. In the real world, demigods are usually thought of as weaker versions of gods, the offspring of gods and humans, or beings turned into gods after death.