Justice League Unlimited (Justice League Unlimited Vol. 2 #6)

WE ARE YESTERDAY PART 2! The horrific hidden identity of the Inferno cult has been revealed, and the Legion of Doom is here to take no prisoners! But something is... off about these ferocious foes of the Justice League. They fight without wisdom, without experience - but with a secret edge?! Buckle up for the biggest clash in Justice League history as Lex Luthor, the Joker, Cheetah, Grodd, and all the vile villains of the original Legion of Doom arrive to terrorize tomorrow!