Shaman of the Nightsisters

In the Dathomiri witches' culture, the Nightsister shaman was an elder Sister who was thought to have access to, and influence in, the world of the spirits. They worshipped the nature's balance and interpreted the nature of the Dark Side of the Force from a specific religious and cultural point of view.

History
The shaministic beliefs on Dathomir predated the coming of the exiled Jedi Allya around 600 BBY. Indeed, both male and female shamans and seers from this obscure planet were known to be amongst the founders of the Je'daii Order circa 36,453 BBY. Their practices survived and probably merged with Allya's Jedi teachings, which gave birth to the Dathomiri Witches' unique culture.

Initiation
Shamans were usually "called" or designated by signs in their early childhood. Clan Mother Talzin, shaman of the united Nighsister clans during the Clone Wars, described how she took the mantle after being saved by the spirits during childbirth.

Roles
The shaman acted as a medium between the concrete and the spirit worlds, mostly through dreams or visions. They would also use their magick in hopes of unfogging the future, with the help of mysterious artifacts such as crystal balls.

Apart from her ability to communicate with the other realm, the Nightsister shaman was also the keeper of the artifacts. Apparently, all Nightsister talismans and other Force-imbued items belonged to the community and were placed under the authority of the shaman. Indeed, the witches had to borrow the artifacts and return them afterwards. When Charal turned her back on her sisters and left Dathomir, she secretly stole the Talisman of the Raven. Many years later, in her manifesto Wild Power, clan shaman Talzin complained about "one of the sisters" never returning the talisman.