An ancient Papyrus of Orpheus has been published in 2006. It predates Plato and is around the time of Socrates, and honors the philosopher Heraclitus.
It’s full of rituals, divination rites, and other goodies. It slams Greek city priests and those charging religious ritual for money. It also talks about gaining a special kind of ‘knowledge’ from an initiator (for free!).
And it talks about how the world is a mess, created by the semen of Zeus, a broken down machine.
Sound familiar? Marcus the Magician and Orpheus are almost one.