sentences:  And the Devil Will Drag You Under
  
  And the Devil Will Drag You Under (1979) is a comic fantasy by American writer Jack Chalker involving an alcoholic demon and two humans he summons to collect the pieces of a mystic artifact that the demon requires to save Earth from an asteroid on a collision course.The humans' journeys include both mystical transformations of their bodies and trips to worlds that parodied famous fantasy novel locales.