Harun's forces only had four ways to deal with Xerzan: play turtles, send the mutants after him, summon the blue-haired immortal, or defeat him in the traditional fashion. Needless to say, Harun wasn't about to use his only Ancestor-tier blow to take Xerzan's life. Even if Nakula himself appeared, he would think thrice before unleashing it. And while the 1.5 million mutants could likely solve the problem, they couldn't give Harun what he wanted. This was not only a chance to introduce Lord Revelation to the world, but a unique opportunity to steal a crucial tool for Harun's growth.