The funny thing is though reviving himself in a live body makes him mortal, even if he is the Jinchuuriki of the 10 tails.
And an Edo Hashirama will have a field day continually respawning and making life a hell for Madara.
Madara is running against the clock here then, he's got to cast his "Eye of the Moon" plan genjutsu as fast as possible before the Edo Hashirama decides to beat him back into the grave.
I have a feeling Madara won't be beating the clock.
pity though about Obito, this means it's a sure death for him.