In traditional Changa mixes a blend of herbs were used in combintion with an MAOI containing leaf, typically Caapi. However this isn't necessary, I actually find the non-MAOI containing leafs to be more enjoyable. You don't have to research what leafs are going to work best together or worry about what ratios between different leafs are needed. Simply pick a herb from the list and use it as the stand alone ingredient for the Enhancement, this will give you a sure and thorough understanding of the effects of each leaf and is my preferred method. If further down the track you feel like experimenting you could then mix and match with the herbs you liked best or try out one of the suggested blends.