@UltimateHero0406: A lot of things slightly off with your post. 1. Madara released Edo tensei so he should not be immortal anymore and even if his immortality retained, he can still have his soul removed. The only reason he was able to stop that from happening was because he knew the exact hand signs for Edo tensei. Won't work on soul burial. 2.I don't recal Madara having a soul sealing ability. Even if he does, If it doesn't bind Aizen as well, he will just escape with a portal or garganta. 3. If Aizen sent Madara to soul society as a spirit and not physical body, he does not retain his human powers. Because of this, point 4 is also invalid. He could not take over soul society because one, he'd have no powers, two Aizen would still be there and 3 Yamamoto is stronger than either of them.