During the 2019 X-Men franchise relaunch Dawn of X, following Brian's corruption by Morgan le Fey, Betsy Braddock claimed the mantle of Captain Britain in a new volume of Excalibur written by Tini Howard. Leading a new Excalibur roster including Gambit, Rogue, Jubilee, Rictor and Apocalypse, the team comes into conflict with Morgan le Fey and the anti-mutant Coven Akkaba, as well as Saturnyne, who had usurped the role of omniversal magisitrix and refuses to accept Betsy as Captain Britain. During X of Swords, in which Apocalypse's secret plans of reuniting Krakoa with Arakko come to fruition, leading Saturnyne to arrange a tournament between both sides to avoid a war in Otherworld, Betsy is apparently killed in a duel with Isca the Unbeaten, shattering along with the Starlight Sword. Saturnyne reconstitutes the shards to revive the Captain Britain Corps, but is distraught when the new Captains Britain are variants of Betsy rather than of Brian. After the tournament, Betsy's consciousness becomes lost in the multiverse, returning with the assistance of Kwannon, during which the two begin to come to peace with their complicated relationship. After the revival of Morgan le Fey, Betsy leads Excalibur against Merlyn and King Arthur. As Avalon falls to Merlyn and Arthur, the mutants escape to Earth, severing the connection to otherworld, while uses the Starlight Sword to return to the fight herself, knowing she will be trapped without the protection of Krakoan resurrection.