Legion of Super-Heroes (Renaissance), book 1: Hostile World
Paul Levitz, Francis Portela et Walter Simonson2012

A LEGION MADE NEW

In the 31st century, the Legion of Super-Heroes is just starting to pick up the pieces from their new annihilation, and students of the illustrious Academy are being called up to aid rebuilding. But a new daunting enemy threatens their efforts --- a Daxamite with the unstoppable power of the legendary Superman has gone rogue and seeks to start a revolt against the blockade that keeps his race bound to their homeworld. It's up to fellow Daxamite Mon-El, and the rest of the newly re-formed Legion heroes, to ensure that he doesn't unleash an army capable of bringing down the entire United Planets!