High Evolutionary's team vs DC Earth/Universe
High Evolutionary has been having Magneto helping him lately. Lets say those two enlist the help of Dr. Doom, whos been working with Loki and Namor lately. They all find a way into DC. They have 1 month to investigate DC then a year to prep for it. They have all the resources available to them. Then they invade.
If they take out DC earth, then lets make it the entire DC universe.