This paper will discuss about the plants, which were acknowledged as sacred by shaman and used as a ritual to heal people, which activates minds to experience phenomenal consciousness circumstances. Primary source is Jim DeKorne’s “Psychedelic Shamanism” which developed the essential of this writing, the researches by Terence McKenna, articles from anthropologists and historians, the qualified experts who innovated by researches into the specific topic, and some of shamanist expressions, scientific and personal researches. According to shamanism, sacred plants, which are cause visions and hallucination, have been in use by shamans all over the world. Shamans use those sacred plants in rituals as a tool to communicate with souls and God, also to experience the greater good and the truth beyond this life. Sacred plants are gates to the extraordinary and mesmeric space. Ritual use of hallucinatory plants is neither relaxing nor joyful but it is converter. Person who tries those visual investigations are not purpose to escape to the dreamland. The only purpose could be to learn, to see and to experience. First, the Shamanism and Shamans and a critical aspect of judging system about the usage of psychedelic plants will be described by comparing the laws. Secondly, the relation between psychoactive plants and the nature will be explained with the help of Terence McKenna quotations. After giving some information about the risks of the usage of psychedelic plants and drugs, I will define and describe astral projection, which is denied by science. Lastly, and most importantly, I will describe the usage of some specific plants by giving their history of shamanist usage, visual representation and their shamanist expressions. This paper will conclude with the psychological and philosophical signs that appears to the individual for using shamanist plants. Keywords: Shamanism, hallucinatory plants, shamanist psychedelic drugs