There are four Elemental Prisoners of the Unconscious. They were selected by a cult of arthritic mages of panspermancy. Unwitting sacrifices for nameless power they now float about the antique shops trapped in blue glazed porcelain cows. If one finds one the good thing to do would be to release the poor soul. Of course if you do that you will not have the ability to double any investment made be it in money or in time.
This was something you needed to know.