The Trident of Wrath (3d8) (+16,+18)
+2 strength, dexterity. Slays evil creatures. *Slays* undead. Branded with venom. Provides resistance to light, dark. Cannot be harmed by acid, electricity, fire, cold. Blessed by the gods. Grants the ability to see invisible things.
Min Level 15, Max Level 100, Generation chance 3, 30.0 lbs

(Angband 3.1.2v2)