Probably the most potent strain of Psilocybe cubensis (probably the most commonplace magic mushroom species) is named Penis Envy. This strain gets its name from your phallic-shaped fruiting bodies it makes.  It might be tough to decide on a strain to increase from the countless vastly distinct Psilocybe cubensis strains https://psychedelicfarmmeds.com/product/nightcap-mushroom-chocolate-bar/