What if current Marvel Earth fell to The Flood...
In this senario, Marvel Earth and every hero and villian upon it, has fallen to The Flood...
The powers, knowledge, technology, and full abilities of every single being upon Earth (including those that visit Earth regularly) has been assimilated by The Gravemind, while every life form on Earth now possesses Flood infection...
As a result there are over 7 billion combat forms and millions of trillions of infection forms...
Using the best of the best of Marvel Earths technology (as well as the staggering power of The Gravemind itself), The Flood begin to spread out in an attempt to bring Flood infection to every corner of the universe (every planet that falls will have its entire biosphere infected, while any and every scrap of knowledge, tech, superpowers, and abilities will be assimilated by The Gravemind thereby making it stronger) ...
My question is this, who is the weakest being in Marvel that could stop The Flood and restore Earth to its former (un-infected) status under such extreme conditions?