The Cloak 'Colluin' [1,+10]
It increases resistances: +25% acid, +25% electricity, +25% fire, +25% cold
and +25% poison. It is vulnerable to damage by disenchantment. When worn
and activated, it temporarily protects from all elements & poison,
recharging every 111 turns.
Level 7, Rarity 45, 1.0 lbs, 5000 Gold.

(EyAngband 0.5.2)