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All of reality comes under attack when a mysterious force of entropy begins slowly erasing time itself--making its way from both the past and future toward the present! As history itself unravels around them, the heroes of the world--including Superman, Batman, Wonder Woman, the Flash, the Justice Society and the Titans--scramble to fix the broken timestream. But even if they stop the true source of the chaos, the world they save will never be the same! This new omnibus edition celebrates the 25th anniversary of this epic tale by collecting the original miniseries as well as every DC title that tied into it.