SPOILER WARNING: This article contains major spoilers for Geoff Johns and Jason Fabok's "Justice League" #50 and "DC Universe: Rebirth" one-shot.
"The Darkseid War" concluded in Geoff Johns and Jason Fabok's "Justice League" #50, just ahead of the events in the DC Universe-changing Rebirth event. But before the League's heroes -- and some of its biggest villains -- experience the changes hinted at in the "DC Universe: Rebirth" one-shot, they experienced some genuinely massive changes in their last New 52 issue.
Superwoman's Baby is Born -- and She Dies
Over the course of the arc, the Crime Syndicate has bid their time, awaiting the birth of Superwoman's baby without revealing any details about the child or its father. In "Justice League" #50, however, all was revealed after she finally gave birth to a son who -- like his father Alexander Luthor -- could absorb all energy, "even that of the gods." Superwoman then wielded the child like a weapon with the intention to absorb the Justice League's collective powers.
However, it wasn't long until Grail used Superwoman's overconfidence as an opportunity to destroy Superwoman and seize the child for herself. With his power, she removed the League's new god-like abilities and separated the Black Racer from the Flash. Following a major death that shook even Grail to her core, she slipped away with the child, unnoticed by the League.
Jessica Cruz: Green Lantern
For most of "The Darkseid War," Jessica Cruz was sidelined by Volthoom, aka Power Ring; while she was present for the action, she had no control over her own body. Similarly, Volthoom had trapped Cyborg inside the ring so that Grid, another member of the Power Syndicate, could seize control of his technology. Confined to the ring together, Jessica and Cyborg devised a plan, and Cyborg managed to hack the ring's supernatural technology so that Jessica could momentarily regain control.
Realizing that the Black Racer intended to kill Flash, Jessica used her moment to make a sacrifice play, leaping between the two speedsters. As such, the Black Racer was able to claim a life -- but it wasn't Jessica's. The Black Racer killed Volthoom, which simultaneously released Jessica and Cyborg from his control.
In sacrificing herself to save Flash, Jessica showed the ability to overcome great fear and was subsequently enlisted into the Green Lantern Corps. Though they don't question her worth, Hal Jordan and Jon Stewart are both puzzled as to why the ring thinks their sector needs another ring. They can't explain it, but Jessica Cruz has officially leveled up to full Green Lantern.
Lex Luthor: Ruler of Apokolips
Following Grail's defeat and the end of the war, Lex Luthor returned to Apokolips. There, he was greeted by Ardora, a rebellion leader who who offered him a throne and a symbol -- a very familiar symbol, in fact. Luthor ascended his throne, Mother Box in hand, and revealed Superman's S-shield on a set of new red-and-blue armor. During the scene, he tells his followers that he intends to lead a revolution on the faraway planet following Darkseid's demise.