Green Lantern: New Guardians Vol. 6: Storming the Gates (DC, 2015)

Kyle Rayner, the White Lantern, has done something no sentient being has ever done before: He's traveled beyond the Source Wall that rings the Multiverse and brought back with him the Life Equation. It represents the ultimate power, the ability to remake reality... and it's too much for Kyle to handle. Now, Kyle needs saving from himself. And no one knows more about the Life Equation than Highfather of the New Gods, who has graciously volunteered to take Kyle'Aos burden onto himself. Unfortunately, the Life Equation was exactly what Highfather needed to start a war in the heavens... a war that threatens to destroy the universe! Writer Justin Jordan (SUPERBOY) and artist Diogenes Neves (GREEN ARROW) bring Kyle Rayner to the end of his epic journey! Collects issues #35-40.