Leaving behind his fortune and prestigious political standing, Kel’Thuzad abandoned the ways of the Kirin Tor and left Dalaran forever. Prodded by the Lich King’s persistent voice in his mind, he sold his vast holdings and stored away his fortunes. Traveling alone over many leagues of both land and sea, he finally reached the frozen shores of Northrend. Intent on reaching Icecrown and offering his services to the Lich King, the archmage passed through the ravaged, war-torn ruins of Azjol-Nerub. Kel’Thuzad saw firsthand the scope and ferocity of Ner’zhul’s power. He began to realize that allying himself with the mysterious Lich King might be both wise and potentially fruitful.

After long months of trekking through the harsh arctic wastelands, Kel’Thuzad finally reached the dark glacier of Icecrown. He boldly approached Ner’zhul’s dark citadel and was shocked when the undead guardsmen silently let him pass as though he was expected. Kel’Thuzad descended deep into the cold earth and found his way down to the bottom of the glacier. There, in the endless cavern of ice and shadows, he prostrated himself before the Frozen Throne and offered his soul to the dark lord of the dead.

The Lich King was pleased with his latest conscript. He promised Kel’Thuzad immortality and great power in exchange for his loyalty and obedience. Eager for dark knowledge and power, Kel’Thuzad accepted his first great mission: to go into the world of men and found a new religion that would worship the Lich King as a god.

To help the archmage accomplish his mission, Ner’zhul left Kel’Thuzad’s humanity intact. The aged yet still charismatic wizard was charged with using his powers of illusion and persuasion to lull the downtrodden, disenfranchised masses of Lordaeron into a state of trust and belief. Then, once he had their attention, he would offer them a new vision of what society could be – and a new figurehead to call their king.