Light's Vengeance

Light's Vengeance was the hammer used by during his life as a paladin.

History
Light's Vengeance was an enormous, heavy-looking hammer, its silver head etched with runes and its sturdy haft wrapped in blue leather. It was given to Arthas by Archbishop Faol when Arthas completed a ceremony held in the Cathedral of Light and joined the Knights of the Silver Hand.

When he took up Frostmourne, Arthas discarded Light's Vengeance, leaving it in Frostmourne Cavern in the Dragonblight. Players can see a flashback of this scene in the quest.

The Sacred and the Corrupt
wants adventurers to collect Light's Vengeance for the quest. He wishes to create an artifact to rival Frostmourne, and believes only the hammer of Arthas himself will provide a worthy model.

When reforged with saronite, Light's Vengeance is transformed into Shadow's Edge, the unfinished form of Shadowmourne.

Trivia
In World of Warcraft, Light's Vengeance shares its model with the.