By using this spell, the priest can temporarily enchant a small pebble, which is then hurled or slung at an opponent. The stone deals 3d4 points of crushing damage to whomever it hits except undead creatures, who take 6d4 points of crushing damage instead. The stone is considered a magical weapon, although it does not have an attack or damage bonus.
This spell's name is "Magic Stone", without "al", in the original Icewind Dale, although its description indeed uses the correct name, which then was fixed in the Enhanced Edition.