Here’s some info on trancework: Tutorial: Trancework
And yes, psilocybin mushrooms. I had used only 0.50g, which produced almost no effect at all. I was able to tell the difference from the feeling from the drug, to the magickal working/energy of the spirit. Definitely was not an illusion, or any part of the trip. Trust me dude, try it. Gaze at a sigil, chant the spirits Enn, and BOOM! You will certainly come in contact with a spirit. There is plenty of info here on the forum of other users doing such as well.