It could also mean DMT and Leaf mixed together, not necessarily Leafs mixed together.

I've been doing it for a while now and have been very content on the effects of individual leafs. By mixing the leafs you are just utilising and blending their different effects. Caapi is added to make it stronger and longer but doesn't have to be used. All the other leafs have their own attributes to how they shape the experience, experimenting with one leaf at a time allows for articulate knowledge of each leaf. It also allows the leaf to perform at it's fullest as apposed to having 3-4 other leafs in the blend all trying to have a say. Try using Caapi just by itself, I assure you'd be pleasantly surprised.