Star Trek / Green Lantern: The Spectrum War #1

With the Green Lanterns and the remaining Guardians gone, Ganthet takes 6 different spectrum rings and flees the universe. Years later, in another universe, The Enterprise investigates a deserted planet where they find the body of Ganthet and the six rings. When examining the rings, Scotty inadvertently activates them, and the rings choose new hosts from among the Enterprise crew and the Klingons. At that moment, Hal Jordan suddenly appears.