[@RisqueBoots]

I'm also aware that the second quote ("The chief can normally order the tribe to do anything he wants...") might contradict the other stuff if it isn't explained. In order to do "anything he wants", it would have to be something within reason, ie. doesn't anger the shaman or the leading warriors, which in turn means it can't be seen as a violation of their laws and traditions. Keep in mind that their laws are unwritten, and much of the law depends on how the shaman remembers it and how previous chiefs have applied it.