The Ring of Power 'Vilya' (+10,+10)
+3 strength, intelligence, wisdom, dexterity, constitution, charisma, speed. Provides immunity to lightning. Provides resistance to lightning, poison, dark. Cannot be harmed by acid, electricity, fire, cold. Sustains intelligence, dexterity, constitution. Slows your metabolism. Feather Falling. Speeds regeneration. Prevents paralysis. Sustains your life force. Grants telepathy. Grants the ability to see invisible things.
When activated, it heals 1000 hit points. Takes 202 to 300 turns to recharge.
Min Level 90, Max Level 127, Generation chance 1, 0.2 lbs

(Angband 3.1.2v2)