Lightbringer

Lightbringer is the sword of Stannis Baratheon. At the behest of Melisandre, he pulls it out of the fire created by burning statues of the Seven.

It is unknown what became of the sword after Stannis leaves it behind on the beach at Dragonstone. It was last seen being carried off by Davos Seaworth.

According to prophecy, Lightbringer would be pulled from fire by the Lord's Chosen, the Prince That Was Promised, champion of the Lord of Light.