The Holy Clavis (in Japanese: ホリー クレービス, Horii Kureebisu), also sometimes known as the "Clavis" (in Japanese: クレービス, Kureebisu), is a legendary artifact with dangerous mystical powers and an item in Lightning Returns: Final Fantasy XIII. This mythical and mysterious golden treasure chest-like relic is essential to the performance of the Soulsong. For this reason, it is desired by the powerful religious society known as the Order of Salvation as the important part of their ceremony in the name of their God, as well as Oerba Yun Fang, who is determined to find and destroy the Clavis before the Order can get their hands on it. To this end, Fang traveled to the Dead Dunes, where the object is said to be found, and founded the gang of desert bandits called Monoculus.