What about a transcendent god that is actually not of this dimension/universe, but actually from an even higher plane of existence. Operating by a set of rules not in the traditional spectrum of good-evil but by some other scale not understood by humans. Their motives for interacting in this world only mysteriously connected to something it did or invested in an age before ages.
Perhaps this god exists in a universe where the gods of this universe even worship it. So a god so godlike that even gods worship it. Imagine something so transcendent and how it would view us would be like how you would view the playthings of your playthings. That's how they would interact with this world.
The interesting thing about this god is perhaps it provides an even more interesting perspective on the Eternity Universe, that even the gods of this world have gods they worship.
What if at some point, there's some fourth-wall breaking where you realize this transcendent god is actually... you. Mind blown baby.
