Maul of Cursespewing
This +1 Cursespewer Maul is constructed of a vertabra bone from some immense creature, a long wooden spear thrust through it and lashed in place. Upon successfully dealing damage to a creature, that creature must make a DC 16 Will save or suffer a -4 morale penalty to attacks, saves, and skill and ability checks. The shaft of the weapon is covered in blood-painted engravings of faces twisted in torment and sadistic glee.
CL 6, bestow curse, +2 weapon, 8315 gp