When used, the artifact would kill a number of people based on the judgement of Judgement. The exact number of people is uncertain. Cordelia Hasenbach thought it would kill less than 9 in 10 people in its range.
The artifact can be used in a weakened manner. By doing this Cordelia scoured the works of the Dead King from the principality of Salia. When used this way it is less discriminating, and killed hundreds if not thousands of people in the blast as well.