The Lich King Triumphant
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Even weakened as he was, ultimately outmaneuvered and reached the Frozen Throne first. Using his runeblade, Frostmourne, Arthas shattered the 's icy prison and thereby released 's enchanted helm and breastplate.
Arthas placed the unimaginably powerful helm on his head and became the new Lich King. Ner'zhul and Arthas' spirits fused into a single mighty being, just as Ner'zhul had always planned. Illidan and his troops were forced to flee back to Outland in disgrace, while Arthas became one of the most powerful entities the world had ever known.
Currently Arthas, the new and immortal Lich King, resides in Northrend; he is rumored to be rebuilding the citadel of Icecrown. His trusted lieutenant, , commands the Scourge in the Plaguelands. and her rebel Forsaken hold only the Tirisfal Glades, a small portion of the war-torn kingdom.