Immortal magic, including psychics, is not absent in Kirin tor, but the mainstream values of human society exclude the existence of immortal magic. Even as a legendary hero in the mainland of Lordaeron and one of the 100 wizards originally taught by the elves, Meryl Winterstorm, a former exorcist, was expelled by Dalaran after becoming a necromancer (see Med 'an entry for the story about Merry).
Therefore, it is inevitable that Kel 'Thuzad, who is obsessed with spiritualism, is incompatible with Qilinto's universal values.
After the orc war, the collected information about the orc warlock's death magic and the orc death knight was taken to Dalaran and locked in the Violet Library. Obsessed with psychics, Kel 'Thuzad used his identity as an exorcist to obtain this information and began to carry out some dangerous experiments. Although the experimental materials are only mice, these zombie animals have aroused the anxiety of the surrounding farmers and had a bad influence on the reputation of Master Kirin Thor.
Archmage antonidas warned Kel 'Thuzad that Kel 'Thuzad promised antonidas on the surface, but secretly conducted his psychic experiment.
So Kel 'Thuzad's relationship with other Kirin Trane wizards is getting worse and worse. Then he heard the call of Nero Zu, and after a long and painful journey, he came to the frozen wasteland of Northrend. Kel 'Thuzad fell at the feet of the Lich King. He not only gave his loyalty, but also gave his soul.
He obeyed Naiozu's will and returned to Dalaran, where he secretly established the Curse Sect. Later, when Arthas discovered a new virus in an experiment, he killed Kel 'Thuzad. When Arthas surrendered to Nerozu, became a death knight, and then captured Silvermoon City, he revived Kel 'Thuzad (lich form) with the power of well of eternity and became Arthas' confidant. When Arthas became the Lich King, Kel 'Thuzad was directly promoted to the adjutant of the scourge of the undead, and finally ended his life in Naxxramas. Because of his failure in Delano, the swindler Kilgardan froze Naiozu's broken soul in eternal ice crystals, and then threw the ice crystals into Northrend, a cold continent in northern Azeroth, making Naiozu the Lich King and threatening Naiozu to serve himself again. Ner 'Zu, who was afraid to bear the endless pain of his soul being torn apart in the twisted void again, had to carry out Kiel Jia Dan's plan. Later, many powerful individuals in Azeroth heard the call of the Lich King from Northrend, the most noteworthy of which was Kel 'Thuzad, the great magician of Dalaran. Kel 'Thuzad is a senior member of the Parliament of Kirintor and one of the six members of the Parliament. For many years, he was regarded as an alien. He studied necromancy. When he heard the powerful call of the Lich King's voice, he thought that Kirin Tor had too many restrictions on his study of dark magic, so he sold his property, gave up his position in Kirin Tor and went to Northrend to find the Lich King alone. He passed through the ruins of Azhuo-Nerubo, where he experienced the powerful power of Nerazu, the lich king, and realized that it was a wise choice to take refuge in Nerazu.
A few months later, he reached the glacier under the frost cap. Here, Nero Zu's undead guards let him into The Dark Castle. He fell before the Lich King and has been loyal to Nero since then.
The Lich King is very satisfied with this recruit. He promised Kel 'Thuzad eternal life and powerful magic in exchange for his loyalty. And gave Kel 'Thuzad the first order: go to the human world and create a sect with the Lich King as its god. In order to ensure the execution of this task, the Lich King kept Kel 'Thuzad's human form. Kel 'Thuzad paralyzed a large number of oppressed and miserable people in Lordaeron with his magic and persuasion. Kel 'Thuzad followed the instructions of the Lich King and monitored the spread of the plague in a small town called burrell. Kel 'Thuzad put the plague in a crucible, mixed it with grain, and spread to several villages in northern Lordaeron overnight. The unsuspecting villagers died of infection and were resurrected as brainless zombies to obey Ozinai's orders. With Kel 'Thuzad's help, more grain infected by the plague was transported from Andohar to all parts of Lordaeron, causing a large-scale zombie panic. Jaina and Prince Arthas found him here and chased him to Andohar. Here, he told Arthas that the real black hand was Stansom's fear demon Margain Nice, and Arthas killed him in a rage. But Kel 'Thuzad is only the first step of Nerazu's plan, and Arthas, the protagonist of the whole plan, is his real goal. However, Nerazu has informed Kel 'Thuzad of his death. Everything is as the Lich King expected. Arthas stepped into the trap step by step, and in the massacre of Stansom, he deepened the fall of Arthas. In the end, Arthas, who went deep into Northrend, picked up the fallen sword that Nero Zu had already arranged-the rune sword and the sorrow of frost, killed Marganis and completely fell.
Kel 'Thuzad's soul waited patiently on the noble prince's body until the fallen death knight Arthas appeared and killed the paladin guarding Kel 'Thuzad's cemetery. Arthas occupied Silvermoon, the main city of Quel 'Salas high elves. In the Sunwell of Silvermoon City, Kel 'Thuzad was resurrected as a lich. After Dalaran stole Medivh's book, Kel 'Thuzad summoned Archimonde, and Archimonde's anger razed Dalaran to the ground.
After Arthas, the Lich King, woke up, Naxxramas returned to Northrend to meet the Northern Expedition of the Alliance and Tribe, and the resurrected Kel 'Thuzad appeared on the north wind tundra, ready to give a gift to the warriors of Azeroth. Of course, Kel 'Thuzad was finally killed again in Naxxramas, but his life-saving box was nowhere to be found. Now, Arthas is dead, and the Scourge Corps has been voluntarily sealed by Bolivar as the new Lich King. Who will Kel 'Thuzad's loyalty be dedicated to? A lich can be reborn at any time, as long as the rescue box is not destroyed. Kel 'Thuzad will choose to obey bovar? Or show your ambition and compete with Bolivar? These are still waiting for the future story to be revealed to us.