I was thinking about calling it Shaman because of the mostly African nature of zebra and the religious nature of the bishop.
While the name Shaman has the advantage of being easily recognizable and understood, it is a generic term and not at all exclusive to Africa. Witch doctor is not as general and may be used for African shamans. I learned from the Wikipedia article on Witch doctor that the term Sangoma is used in southern Africa. I also checked where zebras are in Africa, and it is mostly in southern Africa.
While the name Shaman has the advantage of being easily recognizable and understood, it is a generic term and not at all exclusive to Africa. Witch doctor is not as general and may be used for African shamans. I learned from the Wikipedia article on Witch doctor that the term Sangoma is used in southern Africa. I also checked where zebras are in Africa, and it is mostly in southern Africa.