Magical mastery among tribal Leaders functions as a method of supervision and decision to combat long-standing tribal conflicts and also supports the construction of local Basuaghang cultural rituals. This group has an everyday magic, even being users and owners. Since tribal chiefs were people who should be respected, it was natural that they would have magical powers. The main question in this research is how the role of Magic as a method of control and decision in ongoing tribal conflicts functions and how the local cultural rituals of the Basuaghang Adat support its construction. Cultural anthropology studies were carried out on the Ocu people group in Kampar. As research uses a qualitative approach, it is essential to explain the strength of the data obtained by informants by describing real societal situations. The research results show that magic functions as a check on prolonged racial conflicts. This is the basis for making decisions. The ability and possession of Magic by traditional tribal leaders is not only required by indigenous people but also a necessity. The belief that a tribal leader can master Magic is considered the highest decision by the people who support it. This indirectly serves as a basis for establishing local Basuaghang cultural rituals.