Challengers: New:TPB:

Spinning out of the best-selling Dark Nights: Metal epic comes New Challengers, a group of fearless explorers who will uncover the worst-and weirdest-the DC Universe has to offer. A new team of misfits are given a second chance at life by the mysterious figure "the Professor"...but only if they're willing to explore the most unknown reaches of the universe. Seeking a set of powerful artifacts, the team must defeat a rival group of explorers to combine them...or the world as we know it could end. Collects the entire six-issue miniseries.