Lore:Starfrost

The Starfrost is a magical frost given to the champion of Dawnstar, a city along Skyrim's northern coast. It focuses the power of elemental winter and the prayers of Dawnstar's inhabitants through the user, and is seemingly used in times of war. With this power, the user is nigh immortal and cannot fall in battle.

The Starfrost was given to a disgraced hero when Dawnstar was under siege by the Ice Tribes. After town's traitor was revealed, Dawnstar's three remaining champions were able to return from exile and hold the city walls, while the hero was given the Starfrost and ordered to kill any enemies who slipped through. The hero's good name was restored following a final battle with the Thriceborn Gehenoth, which ended the siege.