The Multi-Hued Dragon Scale Mail 'Razorback' (-4) [30,+25]
Provides immunity to lightning. Provides resistance to acid, fire, cold, poison, light, dark, disenchantment. Cannot be harmed by acid, electricity, fire, cold. Prevents paralysis. Grants the ability to see invisible things. Aggravates creatures nearby.
When activated, it fires a ball of electricity in all directions, each one causing 150 damage. Takes 1000 turns to recharge.
Radius 1 light.
Min Level 90, Max Level 127, Generation chance 11, 50.0 lbs

(Angband 3.1.2v2)