Card, Orson Scott. Side step trilogy #2

Laz has already saved humanity before. As a side-stepper, Laz was born with the power to jump his consciousness to alternate versions of himself in parallel worlds. He used this power to find a new home for humanity after learning his own Earth was destined to be destroyed. And he hoped his help would never be needed again. But now he's being called on once more to use his powers to change the course of history. This time, it's not just the fate of the world at stake--but many worlds. And only Laz has the ability to stop the coming interdimensional war from consuming them all

Ages 14 up

Grades 10-12