The Beaked Axe of Hurin (3d6) (+12,+15)
It increases your strength and constitution by 2. It slays trolls and dragons, and it is especially deadly against demons. It is branded with acid. It provides resistance to acid, fire, and dark. It lights the dungeon around you. It activates for berserk rage (50+d50 turns) every 80+d80 turns. It cannot be harmed by the elements. It gives you one attack per turn.
Level 20, Rarity 15, 18.0 lbs, 90000 AU

(NPPangband 0.5.0-WIP8a)