The Star of Elendil
Permanent light-source (radius 3). It gives its wielder see invisible and
luck finding items. It cannot be damaged by any means. When worn and
activated, it maps the local area, recharging every 50+d50 turns.
Level 20, Rarity 20, 0.5 lbs, 10000 Gold.

(EyAngband 0.5.2)