Wish of the Mahōshōjo

The Wish of the Mahōshōjo (魔法 少女の 願い, mahou shoujo no negai) is the name given to a mysterious magic possessed by few malicious spirits across Earthland. This magic has been around for as long as human's could document, as it has appeared in ancient cave paintings, and written in the age-old papyrus scrolls of the ancestors. The magic is notorious among tribes and shamans, as they are the only one's who now the true evil of the magic, and often perform many rituals that supposedly prevent the spirits that wield this magic from manipulating the young victims. The magic is known to only work on young girls, but only the kind that have a very strong willpower, and a massive amount of magical energy. Once the find a a proper "volunteer", these spirits will either wait until the girl is in a dire situation, or cause one themselves, so they can manipulate and trick the girl into making what is called a "contract" with them. The contract usually goes as follows: the girl is in a dire situation, and the spirit contacts them, and promises them anything they could ever dream of. The girl usually doesn't have time to think it over, and makes a hasty decision that varies depending on the situation. This is a classic "always read the fine-print" situation, as the spirits trick the girls into immortality, and force them to fight the forces of evil; all the while, draining the power of the foes the girl defeated, for themselves. The girls are immortal, and are only able to be killed by the spirit themselves, whenever the spirit feels like the girl has lost her touch. The "upside" to this curse is the fact that the magical girls gain the complete dominance over one thing; usually, an element. This power isn't technically magic, as it is much more versatile and has no known limits. Of course, this comes at the price of not ever being able to live again.