The Iron Helm of Dor-Lomin [5,+20]
This Helm weighs 7.5 lbs. It modifies strength, dexterity and agility, constitution and light radius. It provides resistance to acid, electricity, fire, cold and fear. It gives its wielder telepathy and see invisible. It is not damaged by acid, electricity, fire, cold and water. It cannot be stolen from your inventory. When thrown, it does 1d3 blunt damage. It increases your armor class by 25.
Level 40, Rarity 20, 7.5 lbs, 300000 AU

(UnAngband 0.6.2)