The Mighty Hammer 'Grond' (E:25, L:2) (9d9) (+25,+25) [+10]

The mighty Hammer of the Underworld, blackened by doomspells of
shattering, whose wielder holds the lives of all Morgoth's servants in his
hand.
It is sentient. It must be wielded two-handed. It can be activated
for alter reality every 100 turns if it is being worn. It can cause
earthquakes. It is a great bane of dragons. It is especially deadly
against orcs. It is especially deadly against trolls. It is a great
bane of demons. It is a great bane of undead. It fights against evil
with holy fury. It is especially deadly against natural creatures.
It provides resistance to acid, electricity, fire and cold. It allows
you to see invisible monsters. It gives telepathic powers. It
produces an anti-magic shell. It aggravates nearby creatures. It
cannot be harmed by acid, cold, lightning or fire.
Level 100, Rarity 1, 100.0 lbs, 500000 Gold

(T.o.M.E. 2.3.5)