[kurage]

It doesn't sound like your definition of spirituality and my definition match at all. IMO, spirituality is understanding the significance of you, all of us, and the universe; it's empowerment of self, and understanding that we're all essentially "gods", able to change reality as long as we put our mind, and actions to it.

The shaman by him/herself won't do anything. Neither would the Ayahuasca on it's own. It's having the right combination of both (setting), and your intention (set) that leads to an amazing experience.

The funny thing is, the experience itself is not the most important thing.. it's what you do after the ceremony with your life, and how you change your lifestyle to make you happy.

Obviously, if the shaman isn't giving you the real tea, mixes stuff in, doesn't take care of you, and such, I'd call it a straight up scam.