"Without Sin Part Two" by David Hine, Doug Braithwaite, and Bill Reinhold.
The mysterious, malevolent forces at work extend far past Earth, out into distant galaxies and involve other Green Lanterns and even the Guardians.
Of course, distance doesn't mean much to the Phantom Stranger, but he runs into trouble when he encounters the Belamort, a creature that works as a sort of pleasure-inducer:
...although that doesn't look too pleasure-giving, does it?
To be continued!