Lawbringer offers the very rare Slain Monsters Rest in Peace mod, making it a powerful switch weapon to use against enemies that make use of corpses, particularly Nihlathak. Otherwise, it's a decent weapon for attackers focusing on speed, as it offers Decrepify mod (somewhat offsetting the lack of Enhanced Damage) and a Sanctuary aura that allows all physical damage dealt by the character to ignore resistance on undead enemies.
Lawbringer is a viable weapon choice to equip an Act V Barbarian Warrior with, as the hireling will be able to counter Physical Immune monsters (which certain melee characters cannot easily deal with) as well as the undead (especially Ghosts and Bone Fetishes).
20% Chance To Cast Level 15 Decrepify On Striking
Level 16-18 Sanctuary Aura When Equipped (varies)
-50% Target Defense
Adds 150-210 Fire Damage
Adds 130-180 Cold Damage
7% Life Stolen Per Hit
Slain Monsters Rest in Peace
+200-250 Defense vs. Missiles
+10 To Dexterity
75% Extra Gold From Monsters