Someone recently posted this flyer in a Milwaukee Native Happenings group on Facebook, and I noticed all types of red flags. Since it's being presented as Indigenous healing, and the high price tag for registration, and the fact I never heard of the guy. Upon doing a Google search it looks like a Jewish guy who specialized in dating books now is pursuing the latest fad with shamans and Ayahuasca.
https://roan-kaufman-ce6t.squarespace.com/about