Guardians of the Galaxy by Gerry Duggan Omnibus

A new era of cosmic adventure begins - with the Guardians caught between the Collector and the Grandmaster! And that's bad news when Groot can't grow any bigger than baby-sized, Drax has sworn off violence, and Gamora is hiding something! Can the gang get it together before they find themselves in the middle of a war between the Nova Corps and the shadowy Fraternity of Raptors? Hydra's Secret Empire brings the Guardians back to Earth - but who will blast back off with them as their newest member? And the hunt for the Infinity Stones begins - a search that involves our ragtag renegades becoming...Novas?! But no Infinity quest can be complete without Adam Warlock!

COLLECTING: ALL-NEW GUARDIANS OF THE GALAXY 1-12, GUARDIANS OF THE GALAXY (2017) 146-150, MATERIAL FROM FREE COMIC BOOK DAY 2017 (ALL-NEW GUARDIANS OF THE GALAXY)