In the Blind Eternities, the only thing you can be sure of is that nothing is set in stone. Of course, given the impermanence of rocks in the infinite multiverse, it loses it's gravitas, but it gets the point across. In the endless parallel universes, there will be infinite variations of the same thing. But even perpetual chaos has order. And most variants of the same world have commonalities. A canon, if you will. For example, a space whale that grants powers based on a person's trauma might visit an ordinary world with ordinary people. A completely ordinary world with no supernature. A variation of that world could begin the same way. An ordinary world, where supernatural exists only in stories. But a demon lord of extraordinary power visits this one, whose apperance heralds the coming of the supernatural. And unknowing, sets off the wings of the butterly, bringing the storm of his end.