Look out for indications of mold. If the thing is any green mould, white fuzzy mildew, or dark black spots (mildew) over the mushroom, never try to eat it. Don’t worry if you see blue staining—This is certainly widespread in Psilocybe mushrooms and an indicator that the mushrooms contain psilocybin.  https://psychedelicfarmmeds.com/product/buy-lsd-liquid-online/