This spell allows the caster to render a single edged or pointed non-magical weapon magically sharp by touching it. The affected item does not count as magical, and cannot wound things that are immune to non-magical weapons. However, it gains and keeps an exceptionally keen edge or point, so sharp that for the duration of the spell it will cause one extra point of damage every time it makes a successful hit, and negates protection afforded by leather armour.
The ingredient - the weapon - is not consumed at the moment the spell is cast, but will disappear at the moment the spell's effects wear off. If it is cast on a magical weapon, the spell has no effect and the weapon remains, although the MPs used in casting are lost. The spell can be used on any hand-to-hand or missile weapon.