Marvel: Age Of Mutants

What happens when two siblings awaken their mutations which put them in the class beyond the Omega mutants? How will humans and their fellow mutants act towards them knowing they have the power to eradicate them all in whim? And for the aliens coming to Earth for conquering, how will the two siblings react towards them? PS: I do not own Marvel characters, just the OCs I will introduce here. Also, this will not be an incest, harem kind of novel so for those who wish it might be then be warned.