The New 52
In addition to "Villains Month", a seven-issue limited series titled "Forever Evil", by Geoff Johns and David Finch, launched in September 2013 and focused on the Crime Syndicate, an evil version of the Justice League from Earth-3 in the Multiverse, as they attempt to take over Prime Earth in the Justice Leagues' defeat at the end of "Trinity War". The "Forever Evil" event ran in other titles starting in October 2013, including three 6-issue tie-in books that launched: "Forever Evil: Rogues Rebellion" by Brian Buccellato and Patrick Zircher; "Forever Evil: Arkham War" by Peter Tomasi, Scot Eaton and Jaime Mendoza; and "Forever Evil: A.R.G.U.S." by Matt Kindt and Manuel Garcia. Other tie-in titles included: "Teen Titans", "Suicide Squad", "Justice League", "Justice League of America" and the "Forever Evil: Blight" storyline in "Constantine", "Justice League Dark", "Trinity of Sin: Pandora", and "Trinity of Sin: The Phantom Stranger". "Forever Evil" #1 was also reprinted in a director's cut one-shot in October 2013.
Forever Evil: Blight
"Justice League Dark" #24 received a 7.2 out of 10 from IGN's Jesse Schedeen. He felt writer "DeMatteis has a reasonably engaging debut on the book. This issue excels as it uses Constantine as a mouthpiece to explore the nature of evil, deconstructing the claims in "Trinity War" that evil is a tangible thing that be loosed on the world or contained in a box. But DeMatteis' writing is often too wordy, especially when it comes to the narration [and his] Constantine is a bit mixed in his execution. In a general sense he reads very much like the shifty, conflicted magician we know, but his British accent and mannerisms are even more downplayed than they have been of late." Doug Zawisza of Comic Book Resources, gave the issue 4.5 stars out of 5, saying, "While "Justice League Dark" #24 is short on panel appearances by Deadman, Frankenstein, Madame Xanadu, Black Orchid and Zatanna, the comic book doesn't suffer for it. John Constantine is given a chance to re-familiarize himself with readers as the House of Mystery is explored throughout the issue. By the end, Constantine has settled on a mission and begins to assemble a team. The decisions he makes along the way and influential forces provide a strong issue and continue to make "Justice League Dark" an enjoyable read," while praising the creative team for their work. Rob McMonigal of Newsarama gave the issue a 9 out 10, saying, "Constantine’s worst foe - himself - is on display in this psychological tie-in to the events of "Forever Evil" that shows off the best of J.M. DeMatteis’ writing abilities. [Mikel] Janin does everything right here, from the Chibi Constantines to visualizing the concept of evil as a steadily growing cloud. This is how to do a crossover issue right."