The Vast Expanse.
Endless. Immeasurable. Perhaps it had an ending point, but up til now, no one had ever reached it, except perhaps someone who had Transcended.
It was too large, and contained too many worlds and Realms. There were too many peoples within it, too many dangers. There were vortexes which contained inexplicable, indescribable forms of life, or legends which had long since been reduced to nothing more than ruins.
In addition to that, there was dust, which was actually the most common sight in the Vast Expanse. Within that dust could be found corpses, rubble, even magical items. In fact, anything could be found within the dust, if you searched for it.