User blog comment:MS225/Guess Who's Back/@comment-7890302-20160926234548/@comment-28501280-20160927001533

Maybe something happens a bunch of heroes from other earths have to come help like Earth-2 Green Arrow and Jay Garrick. Or maybe Earth-2 G.A. is looking for Black Siren. Since the Earth-1 versions are staying dead and it's not flashpoint of flash back it seems to be the only option.