Beyond The Shore
This weapon appears to be simply a single, large bone, with a ridiculously large and flared socket at one end — perhaps the hip-bone or shoulder of an osteoporosic giant. The bone is nearly six-feet in length, weighs fourteen pounds, and is as hard and sturdy as iron. It radiates a powerful aura of necromantic magic.
Wielded in combat, the Wheua-hama functions as a bone Earth-breaker, and counts as a magic weapon for the purpose of overcoming damage reduction. The strangely well-balanced chunk of bone grants a +2 bonus on attack rolls.
Any corporeal undead creature struck by the Wheua-hama must succeed on a DC 14 Will save or be instantly destroyed. If the undead creature fails its save, it is instantly destroyed, exploding in a burst of flesh and bone that deals 1d6 points of bludgeoning damage per 3HD of the undead creature to everyone within a 10-ft. radius burst (Reflex DC 14 for half damage).