Batman / Superman #21 (variant card stock cover - Kaare Andrews)

The dimension-shattering Archive of Worlds saga ends hereand reverberations from this titanic tale last long after the dust settles! As the Dark Knight and the Man of Steel work to halt the villainous Auteur.io's plan here on Earth-0, the Batman and Superman of their respective archive worlds must team up with Alanna of Rann and El Diablo himself to save what's left of their homes. Etrigan and his demon hordes rain Armageddon down on their pocket universesand the fate of the World of Tomorrow and the World of the Knight hang in the balance!