Besides the very high added Fire damage inherent in the weapon, Demon Limb also gives the user a very high level Enchant, simply compounding more fire damage and, more importantly, attack rating. Assuming an enemy is not immune to fire, Demon Limb can do massive amounts of damage, especially against Demons.
An ethereal version of this weapon is especially useful, both due to the higher damage and the fact that the self repair attribute makes it possible to use this weapon indefinitely.
One-Hand Damage: (89-105) To (162-191)
Required Level: 63
Required Strength: 133
Mace Class - Normal Attack Speed
+180-230% Enhanced Damage
+50% Damage to Undead
+123% Damage To Demons
Adds 222-333 Fire Damage
7-13% Life Stolen Per Hit
Fire Resist +15-20%
Level 23 Enchant (20 Charges)
Repairs 1 Durability in 20 Seconds
(Only Spawns In Patch 1.10 or later)