The Heart of Ahriman

The Heart of Ahriman is the barbarian quest artifact. It is neutral for wishing purposes. Its base item type is a luckstone and it also has exactly the same properties that regular luckstones have.

The Heart of Ahriman is arguably one of the weakest quest artifacts. The most useful feature it has is that when invoked, it toggles levitation on or off. When carried, it confers stealth.

The Heart of Ahriman can also be used as a projectile weapon: when thrown or slung, it gives +d5 to hit. It also does double damage to the monster it hits but only when it's slung.

Attempting to name an ordinary luckstone The Heart of Ahriman always makes your hand slip and gives it another name; together with kicking (to detect loadstones) and rubbing (to detect touchstones), this provides a surefire way to distinguish any unidentified gray stone.