http://www.indians.org/articles/crazy-horse.html
http://nativeamericans.mrdonn.org/greencorn.html
http://www.crystalinks.com/shamanism.html
Myth:There is a very famus leader call "Crazy HOuse". He was the leader of Sioux. He never wears any face paints in battle. 1866 he took 1000 warriors fight U.S.
Ritual:
They think nature is very important. They seldom killed the thing alive. They never use things on the little things.
Holiday:
They thanks the god give them food. They think gather is important, so they will have Green Corn Festival.
Link:
http://world-of-wolfspirit.freeservers.com/page5c.html
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I read the first paragraph. We call Shamanism because the meaning of them "crazy man" or "one who affects the soul". They don't have founder. They go through many years than became this religion. There are different form every country of Shamanism.
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He is kind of Shaman.