Hal Jordan and the Green Lantern Corps (2016) #20

PRISM OF TIME part three! As a final confrontation between the prism beasts of Sarko and the remaining Green Lanterns comes to a head on Mogo, the Corps tries to hold their ground as Hal Jordan embarks on a stealth mission to the planet where he forged his Green Lantern ring! But what he finds there brings Hal back to past decisions he'll now regret. RATED T