Decided at the last second to enter the contest, here's the starting concept:
This is supposed to tend towards Demonic/Darksiders Core, with the idea that the faces are carved out of a solid chunk of material (metal/bone?). The mace is 'three-pronged' as shown by the top-down profile, with three skull faces as the pummeling surfaces.
Doesn't strike me as particularly original, just slapping skull faces on and all ; P. C&C welcome!
Off to wrench my head for color choices.EDIT: Saw Impala88's hammer just now, guess it's back to the drawing board.