For a time Cthulhu and the Great Old Ones will be freed from their tombs to prey upon the herd of mankind. In their fear and madness the remnants of humanity will call upon their Elder Gods to save them, but those gods are weak and fearful, and they will not leave Kadath to face Great Cthulhu.
In this time the crypts under the Monastery of Tsan-Chan will give birth to the Avatar of Nyarlathotep that is to be known as the Prince of the Black Flame. He shall inhabit a body sewn piecemeal from age old corpses and cover himself with yellow robes to hide his decay, only those with the third eye will see his crown of black fire and wings of black flame.
The Avatar will cause the stars to change their course, then will Cthulhu and his spawn be made to retreat to their tombs and be sealed again, dead but dreaming. All men will turn will turn to serve the Avatar and he shall build a great empire to cover seven tenths of the earth. Mighty altars will be set for the Outer Gods and they shall run red both day and night. Elder Seals shall be broken and the demons beyond Kadath set loose on the world to be worshipped and given all manner of sacrifice.
In the far reaches of Kadath will the Elder Gods of man cower, for the world will no longer be theirs. In time they will be forgotten by all men. Their names not written down on any parchment or carved upon any tablet they will grow old to become mere shadows, eternally whispering of all they have lost.
("Prophecies of Pnom" as translated by Prof. Christian Morgan)