Illidan po swojej porażce w zatrzymaniu Arthasa uciekł przed Kil'jaedenem do Black Temple. Skoro przestał mu służyć, a musiał móc się przed nim obronić, to zaczął zbierać armię i przy okazji zabijaćAfter the Legion's defeat, Illidan was visited by Kil'jaeden, who, while noting Illidan's sketchy track record with the Legion, offered him one final chance to serve them. He told him to seek out the Frozen Throne, and destroy it. Ner'zhul had grown far too powerful for Kil'jaeden to control, and Illidan was to remove him from the equation; in exchange for more power and magic than he could dream of. He granted him the Orb of Kil'jaeden to aid him in this task.
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Tyle smutku.Note that the in-game animation between Illidan and Arthas was originally planned to be a video cinematic. Time constraints, however, forced the scene to be done inside the game. The developers have said that their greatest regret about this change is that many assumed Illidan died, when the video would have revealed that Illidan survived to watch Arthas' transformation.