Ergot is not mind altering, except insofar as having limbs rot off with gangrene would alter anybody's mind. Making LSD from it requires very complicated chemistry. There is a book called The Psychedelic Guide to the Preparation of the Eucharist that says how (it must be on the web somewhere). Precise temperature control with explosive reagents under spectrally filtered light in a darkroom while keeping everything in fume cabinets. Not in my attic.