Hammer of Hades

A war hammer akin to the dire swords, it has the effect of a Sword of the Nether Realms (double damage to lawful good creatures and beings), but any creature or being of evil alignment can use it.

Besides its special power it may carry +1-4 to hit (+1-3 if enchanted with orichalc); every plus adds to both attack and damage rolls, and a magical weapon counts as superior quality when saving against breakage. Magical arms and armor can be enchanted by alchemists using orichalc or by casters of any profession. A caster needs the materials of a minor magic item and a weapon of the finest quality, then one month plus a further month for each spell-like power or +1 conferred, with a 99% chance of success; the finished piece usually sells for at least twice its materials plus 2,000 G.P. per +1. No mortal can enchant anything beyond +4.