halacha - Are psilocybin mushrooms permitted/prohibited/advocated in Jewish law or tradition?

What does Jewish law or tradition have to say about magic mushrooms? Or in general, about any hallucinogen.

Is it forbidden to consume psilocybin mushrooms or other hallucinogens? Is it advocated? Why?

It seems like the large psychedelic community of Israel approves. Do they have any authority or tradition to support them?