User blog comment:Rafe Adler/Major Crossover/@comment-3423279-20160519143054/@comment-28835160-20160519144413

Then they begin taking down other parallel earths. The next one is the one from The French Mistake. Then they attack Supergirl's earth, then the Smallville one, then the 90's Flash one, and finally they destroy the multiverse and all that is left is the Supernaturalverse.