X-Factor (Vol. 1) #239

SECRET WARS SERIES – His war has been won. The few humans left alive are enslaved, the mutant rebellion crushed. EN SABAH NUR, the APOCALYPSE, rules his BATTLEWORLD kingdom without mercy, but the terrorist X-MEN plan to end his reign. Success means finding one very special mutant named CYPHER and unleashing a weapon that will kill Apocalypse — and possibly all mutants, too!