After the fight with Steppenwolf, Batman meets with Gordon before Arthur shows up and say that Steppenwolf took the Mother Box from Atlantis, then Victor reveals that he is possession of the final Mother Box, which he hid from his father. The team returns to the Batcave which Barry runs around the cave and sits in the Batmobile, before Bruce call for a meeting with the team. Bruce states they should use the Mother Box to bring Superman back to life believing that they need Superman to restore hope in humanity. Diana and Arthur are hesitant about the idea, but Bruce forms a secret contingency plan. The team put Clark's body in the waters of the Kryptonian ship, using Allen's Speed Force energy to activate the Box, causing the resurrection of Superman.
Omnilingualism: Wonder Woman, as an Amazon, has the ability to fluently speak, read, and understand all human languages (even currently dead ones, which allows her to surpass even a polyglot like Sameer), as well as to instinctively identify a language's name when seeing its written form (doing so when seeing Dr. Poison's notes on hydrogen-based mustard gas). Wonder Woman has so far been known to speak or read English (albeit with a mild Middle Eastern accent), French, German, Spanish, Italian, Russian, Mandarin, Chinese, Sumerian, Ancient Greek, Latin, Ottoman Turkish, and Blackfoot, thus making her the most polyglottic member of the Justice League.
When Diana returns she takes on the persona of Diana Prince, now a secret agent and member of the Department of Metahuman Affairs. She is partnered with Nemesis and the two report to Sarge Steel. Her first assignment is to retrieve her sister Donna Troy, who has been kidnapped by several of her most persistent enemies; their powers have been augmented by Circe. After this is accomplished, Diana takes back the title of Wonder Woman.
Wonder Woman and the other heroes were finally released from the Firestorm Matrix when Batman used the Lasso of Truth on Firestorm. Superman was still infected with the Kryptonite shard inside his nervous system, but Lex Luthor was able to extract it, saving Superman's life. Luthor also assembled a group of villains that defeated the Crime Syndicate. Later, at the Batcave, Wonder Woman and the Justice League talked about the enemy that destroyed the Crime Syndicate's world and came to the conclusion that Darkseid would return.