The Beaked Axe of Theoden (2d6) (+8,+10)
This polearm has a beak mounted opposite the blade.
The narrow axe head of this weapon, finely balanced by a crow's beak,
would pierce even the armour of Smaug, and its wielder becomes aware of
the minds of their enemies.
It can be activated for drain life (120) every 400 turns if it is
being worn. It increases your wisdom and constitution by 3. It is
especially deadly against dragons. It allows you to sense the
presence of undead and evil beings. It slows your metabolism. It
cannot be harmed by acid, cold, lightning or fire.
Level 20, Rarity 15, 18.0 lbs, 40000 Gold

(T.o.M.E. 2.3.5)