– 3.5g of MAGIC: Psilocybin mushrooms, usually known as magic mushrooms, really are a polyphyletic informal group of fungi that have psilocybin which turns into psilocin on ingestion.5g MAGIC: Psilocybin mushrooms, generally called magic mushrooms, can be a polyphyletic informal group of fungi that contain psilocybin which turns into psilocin on