The Quarterstaff 'Nar-i-vagil' (1d9) (+10,+20)
+4 intelligence. Slays animals. Branded with flames. Provides resistance to fire, poison. Cannot be harmed by acid, electricity, fire, cold.
Min Level 20, Max Level 80, Generation chance 5, 15.0 lbs

(Angband 3.1.2v2)