The Cloak of Thingol [1,+18]
+3 dexterity, charisma. Provides resistance to acid, fire, cold. Cannot be harmed by acid, electricity, fire, cold. Prevents paralysis.
When activated, it tries to recharge a wand or staff, destroying the wand or staff on failure. Takes 70 turns to recharge.
Min Level 5, Max Level 100, Generation chance 5, 1.0 lbs

(Angband 3.1.2v2)