Quote Originally Posted by deenman View Post
I dont know if we have clear info,but from my impresion he had lost his body when he used the avatar to come in azeroth and enter the guardian,in the cinematic what i can tell is that the smoke is sargeras not that he is hidding in it,and the patheon uses the power from argus to rebuild him so he can be sealed,sargeras wasnt planing on destroying azeroth rather control it like he did with argus,but when he saw what was happening his only option left was to destroy it.
That's headcanon, he never lost his body, avatar was so he could go on azeroth since his form is massive.