When the forces of the dreadlord Mal'Ganis began to close in around them, Arthas and Muradin set out to claim it. When Arthas and his men arrived, they met up with Muradin Bronzebeard, a dwarven explorer who had been searching for Frostmourne after hearing of the weapon's power. Ner'zhul found his agent in Arthas Menethil, the young prince of Lordaeron who had come to Northrend in a quest to end the plague. It was sent to a cave to await one who would claim it and become the Lich King's agent. The first stage of his plan was set in motion when he used his powers to push Frostmourne through the ice and out of the Frozen Throne. Ner'zhul was not content with being a pawn for the Burning Legion, however, and began working on a plan for escape. When Ner'zhul was transformed into the Lich King by Kil'jaeden, his disembodied spirit was shackled to a magical suit of armor including the Helm and Frostmourne, and trapped within an icy tomb called the Frozen Throne for the purpose of containing and controlling the Lich King. Д«oth Frostmourne and the Helm were somehow obtained by the dreadlords of the Burning Legion. As a mourneblade adorned with the runes of Domination, Frostmourne contains the power of the Maw. The Jailer intended to use the blade and the Helm to establish his influence on Azeroth, thereby allowing him to claim his 'final prize', a secret that the First Ones sought to hide.

3.3 World of Warcraft Trading Card GameДЄ vision of Frostmourne in the hands of the Jailer.ДЇrostmourne and the Helm of Domination were crafted at the Runecarver's Oubliette in Torghast by the Runecarver, who was forced against his will to do so by the Jailer.During the third invasion of the Burning Legion, a frost death knight reforged the shards of the blade into the Blades of the Fallen Prince.

Few weapons have shaped modern history as much as Frostmourne. It was wielded by Arthas both during his time as a death knight and as Lich King until it was destroyed by Tirion Fordring in that time, the blade spilled the blood of kings, destroyed nations, and inflicted scars on the world that remain to this day. Frostmourne was thrust from the Frozen Throne by the Lich King Ner'zhul and was taken up by Arthas Menethil in the wastes of Northrend during the Third War. The finest of the mourneblades, it possessed the power to imprison the souls of its victims and could remake the living into mindless undead. Just as the blade rends flesh, so must power scar the spirit.вЂќДЇrostmourne was the fearsome, rune-inscribed two-handed longsword of the Lich King. вЂњWhomsoever takes up this blade shall wield power eternal.

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