The Frozen Throne served as a focal point for the Night King's power, allowing him to channel his energy and maintain control over the White Walkers. It was said that the throne was capable of manipulating the very fabric of reality, warping the seasons and time itself to the Night King's whim. The throne's power was not limited to the White Walkers; it was also believed to have an influence on the living, slowly corrupting the land and its inhabitants with the chill of winter.
When Kil'jaeden hurled the throne into Azeroth, the impact with the Icecrown Glacier in Northrend was so violent it was seen from as far away as Mount Hyjal. remnants of the frozen throne