that's really all that needs to be said about this, but I'll go on anyway
cordyceps are a parasitic fungus that obviously likes to grow on insects and arthropods
this stuff is expensive, yo; "mushroom hunters in Nepal can earn 900 dollars for an ounce of cordyceps"
it's used in an immunosupressive drug called ciclosporin, used for organ transplants sometimes
some species can affect their host's behavior, e.g. making ants climb a plant before attaching themselves to it, so as to increase the efficiency of the spores
