The Silver Bolt 'Balefire' (6d5) (+20,+15)
This crossbow bolt has a silver tip, blessed by the Valar for fighting
evil.
This silver-tipped bolt, ablaze with undying celestial fire, is especially
potent against undead and creatures of the netherworld; it even points the
way to places where such enemies lurk.
It provides light (radius 1) forever. It does extra damage from fire.
It is a great bane of demons. It is a great bane of undead. It
allows you to sense the presence of demons and undead. It cannot be
harmed by acid, cold, lightning or fire.
Level 55, Rarity 30, 0.2 lbs, 50000 Gold

(T.o.M.E. 2.3.5)