WarCraft III: The Frozen Throne (Wc3 TFT) Following the battle, Arthas left Illidan lying motionless in the snow and ascended to the Frozen Throne, where he merged with the Lich King. It is unclear what happened to Illidan afterwards, but he did indeed survive and return to Outland, whether he travelled under his own power or had to be taken back by Kael and Vashj and nursed back to health. According to IMDb, "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's transformation." Illidan then escaped back to Outland, where he will soon be a fightable boss character in the MMORPG "World of Warcraft." - There was a time before world of warcraft. Learn what goes on pre world of warcraft. --- Undead Scourge The horrifying Undead army called the Scourge consists of thousands of walking corpses, disembodied spirits, damned mortal men and insidious extra-dimensional entities. The Scourge was created by the Burning Legion for the sole purpose of sewing terror across the world in anticipation of the Legion's inevitable invasion. The Undead are ruled by Ner'zhul, the Lich King, who lords over the icy realm of Northrend from his frozen throne. Ner'zhul commands the terrible plague of undeath which he sends ever southward into the human lands. As the plague encroaches on the southlands, more and more humans fall prey to Ner'zhul's mental control and life-draining sickness every day. In this way, Ner'zhul has swelled the ranks of the already considerable Scourge. Though Ner'zhul and his Undead Scourge are bound to the will of the Burning Legion, the Lich King constantly strives to free himself and gain vengeance upon the demons for damning him so completely