The Dagger 'Angrist' (2d4) (+10,+15) [+5]
+4 dexterity, speed. Slays evil creatures, orcs, trolls. Branded with acid. Provides resistance to acid, dark. Cannot be harmed by acid, electricity, fire, cold. Sustains dexterity. Prevents paralysis.
Min Level 20, Max Level 100, Generation chance 2, 1.2 lbs

(Angband 3.1.2v2)