The Three Amulets

Lancaster's Academy of Magics has a tournament every decade to find the three chosen Magi to seal off Eden. Eden was the most powerful Magi during the Divination three centuries ago. The Divination was a war between Dark Magic and Light Magic magi, the dark Magi had believed that their magic which was corrupt and unprincipled and should be the ruling factor in the world, opposed to light magic which was pure and moral. Eden was the leader of the Dark Magi, Eden had slaughtered hundreds of magi, and with every murdered, their power would transfer to Eden. And after very quarter century Eden would try to escape.