After traveling through distorted layers of dimensions, those that entered the doorway found themselves in a large dark room, the portal behind them...
The walls and ceiling were jet black, and it was impossible to tell how close or far they were, or if there were nothing there at all. The floor was an intricate tiled pattern that faded off into the surrounding darkness.
Many feet before them was a golden throne, surrounded by four lit torches burning an eerie deep blue flame. In this throne sat an old man, with his head leaning on his right hand as if he had been dozing, although he wasn't anymore...
The man seemed very frail and his white beard was long. This contrasted greatly with the heavy plates of black armor that covered his upper body. These details were very faint, however, as the old man, the throne-- everything was covered with a thick layer of gray dust. He had clearly been sitting there for a long time...
He shifted his weight slightly, sitting up straighter. This caused layers of congealed dust to tear away from his body and fall to floor.
"Ah, yes... excellent. Took you a bit longer than I expected, but no matter. So, have you executed the purge?"