Written by ERIC WALLACE Art and cover by FABRIZIO FIORENTINO Deathstroke battles Arsenal for the leadership of the Titans in the finale of 'The Methusalah Imperative.' But as two bitter foes face off, Osiris and Dr. Sivana make a pact that will change the Marvel Family forever. Meanwhile, one mystery remains - who will wield the catastrophic power of the Methuselah device? Guest-starring Jericho! On sale AUGUST 17 ? 32 pg, FC, $2.99 US ? RATED T+