Caapi leaf is all that SWIM has experimented with thus far, it appears like tobacco leaf, may be very mild and burns properly. He's been calling it "Changa" but most likely can be ideal(extra precise)to check with it as "Enhanced Leaf". Avatar artwork created by not known Cambodian or Laotian. https://beauxxjtz.jts-blog.com/35610626/the-changa-copyright-for-sale-austria-diaries