Blessing
Blessed weapons, shields, and armor are capable of harming the undead, who are otherwise immune to ordinary physical attacks.
To temporarily bless an item, a cleric may cast Bless Item (304) on it, or a member of the Order of Voln may use Symbol of Blessing, or a pure potion may be poured.
Items crafted from magical metals or wizard-enchanted can only be blessed by a sufficiently high level cleric or advanced Voln member (pure potions are effective regardless of enchantment level). Items with inherent weighting or flares cannot be blessed.
Sanctified items (also known as holy items), such as those crafted from white ora or eonake, are considered blessed in the hands of a cleric or paladin, and will show as such if one of them uses the ASSESS verb. Basic sanctified weapons are sold in most cleric shops. Sanctified items are not otherwise blessable when used by other professions.
Permablessed and undead bane items are considered blessed for anyone who wields them, and are extremely rare.