Justice League Unlimited (Justice League Unlimited Vol. 2 #19)

AT THE DAWN OF A NEW ERA... IS A SURPRISE RETURN! As the Leaguers struggle on Earth to fulfill the impossible missions mandated by the Heart of Apokolips and control the villains given amnesty, the space-faring JLU members come face-to-face with Brainiac Queen - back from the pages of Absolute Power and deadlier than ever!