The Cloak 'Colannon' [1,+15]
+3 stealth, speed. Provides resistance to nexus. Cannot be harmed by acid, electricity, fire, cold.
When activated, it teleports you randomly up to 100 squares away. Takes 45 turns to recharge.
Min Level 5, Max Level 100, Generation chance 5, 1.0 lbs

(Angband 3.1.2v2)