https://www.andrewcollins.com/page/articles/thecygnusmystery_creation.htm
https://en.m.wikipedia.org/wiki/Entheogen
Gut feeling that pyshecdelics create a clear transmission in heroic doses to the ascended master within that has access to the knowledge of the stars and the contact that will ensue. Shamans with help of plants tapped into this. It can be done without plants as well and I have found that when done without the plant I do not encounter entities.
Use your discernment and take what resonates and discard what doesn't.