Elseworlds (Event)

Elseworlds is a series of tests planned by Mar Novu to know if which earth have the chance to defeat the Anti-Monitor

Earth-1
In 2018, Oliver Queen woke up as Barry Allen and went to work as The Flash as well as the opposite. Knowing the current situation is bizarre, Oliver went to Star City and found Barry in his outfit. They later went to S.T.A.R. Labs and told Team Flash about their situation. However, they did not believe in them and locked them in the Pipeline. They later realized they should seek help from Kara of Earth-38 and escaped to Earth-38 with the brief assistance from Iris. After they explained to Kara about their situation, they started training and adapting each other's personality. During their chat, Cisco arrived and sought help as Central City was attacked by a robot that was accidentally activated by Oliver during his work in the morning. After they destroyed AMAZO with Superman, they decided to fix this situation. Cisco later vibed a vision of mar Novu giving John Deegan the Book of Destiny and told the heroes they should go to Gotham City. As they arrived, they were arrested and was bailed out by Kate Kane. They later got her help in finding John Deegan and went to Arkham Asylum. However, when Batwoman, Team Flash and Team Arrow arrived for assistance, John started a riot and escaped. After the battle, Barry Allen of Earth-90 arrived in Star City and helped them battle the Monitor who arrived to help John. The reality was again rewritten by John Deegan as Mar Novu returned the book to him. In the reality they are criminals, which then they sought help from Cisco Ramon who is a mafia boss in the reality. With his help, they went to Earth-38 and asked Superman to defeat John Deegan. During the battle, the original reality was restored. When The Flash and Supergirl found a way to stop Deegan, Superman stopped them and warned them they will die. They ignored his warning and Oliver asked for a bargain from Mar Novu, which he will die in Crisis in order to let Barry and Kara survive in the battle. Mar Novu accepted and Oliver destroyed the Book which stopped Deegan. Later, Oliver was awarded of his coming death in the Crisis and accepted his fate.