"The best superhero saga ever!"--Pulp Fiction ReviewsThe Sentinels and their oldest enemies must band together as four Great Rivals--cosmic beings of unimaginable power, to whom humans are but insects--renew their ancient war high above the Earth. But even as our heroes and their foes all rush into space in a hopeless effort to drive away these malevolent menaces, new clues to the origins of Ultraa and Vanadium emerge--revelations that will rock the team to its foundations, and challenge everything we thought we knew about the SENTINELS! This second omnibus volume contains all three novels in the "Rivals" trilogy, including The Shiva Advent, Worldmind, and the PulpArk "Novel of the Year" nominee, Stellarax, along with all fifteen of Chris Kohler's mind-blowing interior illustrations. It's more than 700 pages of cosmic superhero action--continuing the greatest superhero novel saga of them all!