Green Lantern New Guardians #36 (Godhead)

'GODHEAD,' act 2, part 3: With the unwilling help of Kyle Rayner, Highfather at last gains control of the greatest potential weapon the multiverse has ever known: The Life Equation! But such power was never meant to be controlled, let alone weaponized - not even by a god! And without his powers, Kyle is helpless to prevent the unthinkable!