Shamanism
The shaman is called ixht'. He was the healer, and the one who foretold the future. He was called upon to heal the sick, drive out those who practiced witchcraft, and tell the future.
It is a mis-nomer to call him "witch doctor" as the practices of the ixht' and the "witch" are completely different and they were at odds with each other. To call one a medicine man is not correct either as "medicine master" is naak'w s'aati, which is the Tlingit term for a witch.
The name of the ixht' and his songs and stories of his visions are the property of the clan he belongs to. He would seek spirit helpers from various animals and after fasting for four days when the animal would 'stand up in front of him' before entering him he would obtain the spirit. The tongue of the animal would be cut out and added to his collection of spirit helpers. This is why he was referred to by some as "the spirit man".
Future shamans would be chosen before their birth by the elders of a Tlingit community. The elders knew about people and what they would be before they were born. The boy training to become a shaman would be told how to approach the grave and how to handle the objects. Touching shaman objects was strictly forbidden except to a shaman and his helpers. In fact, the elders had a word solely for the instance when a child tried to touch or play with a shaman's objects. The word carried a heavy tone and that was all that needed to be said.
All shamans are gone from the Tlingit today and their practices will likely never be revived, although shaman spirit songs are still done in their ceremonies, and their stories re-told at those times.
Read more about this topic: Philosophy And Religion Of The Tlingit