Female diviner, Luba (Baluba), people, 1988 by Mary Nooter Roberts
This type of diviner is called a Bilumbu or Bwana Vidye
A Bilumbu diviner (diviner is called a nganga) can be possessed by the spirit of past Luba kings, this includes female kings. Luba society had both male kings (Mfumu) and female kings (Mwadi or Kifikwa). Bilumbu communicates with spirits through songs, incantations, and using percussions, spirits would then respond using visual codes.