The Underworld
The dark caverns of the Underworld were still, with only the dim light flickering from nearby torches providing any movement in this dead space. It was the sudden appearance of a Realm Portal which invited not only motion but a maelstrom of chaos into the otherwise calm setting.
Their frames crashed through the portal's mouth, grazing against the walls of the cave, leaving behind clouds of dust, dirt, and rocks in their wake.
A glowing beacon of light gave pursuit to a dark cloud which hurtled through the environment, smashing into anything unfortunate enough to be within its path.
It was in seconds that the entities raced out of the cavern and into an open space. A kingdom of soul orbs could be seen dashing towards the River Lethe, set against a sky that faded between darkness and light.