The Mace of Disruption appears to be a +1 mace, but it has a neutral good alignment, and any undead, evil, or denizen of the lower planes take 5-20 points of damage due to the powerful enchantments laid upon the weapon. It will instantly disintegrate skeletons, zombies, ghouls, shadows, wights, and ghasts. Other undead must make a saving throw if struck by the weapon or be vaporized.

Wraiths = 5%

Mummies = 20%

Spectres = 35%

Vampires = 50%

Ghosts = 65%

Liches = 85%

Undead and evil creatures with more HD than Liches save at 95%.

Even if these saving throws are effective, the mace of disruption scores double damage upon opponents of this sort, and even though there is only a +1 bonus to hit, the weapon is still treated as a +2 for damage and for what it can effect.