The Cutlass 'Gondricam' (1d8) (+10,+11) [+50]
+4 dexterity, stealth. Provides resistance to acid, lightning, fire, cold. Cannot be harmed by acid, electricity, fire, cold. Feather Falling. Speeds regeneration. Prevents paralysis. Grants the ability to see invisible things.
Min Level 20, Max Level 65, Generation chance 12, 11.0 lbs

(Angband 3.1.2v2)