The light emanating from John had not faded for hours after his transformation within the ancient ruins. When it finally dimmed, he emerged with a countenance no longer human. Runes glowed upon his marble skin and eyes shone with eldritch power.
His trembling legions beheld their emperor as both a divine being and object of terror. None dared approach. With a wave, John summoned his high priest. "Inform all corners of the empire: your god now stands before you, ascended beyond mortal limits. All shall bow before my godhood."
Word spread like wildfire. Across the sprawling Sorcerous Empire, people fell prostrate in awe and fear of their emperor transformed. In Sorcerygrad's grand temple, John's high priest delivered a sermon. "Rejoice, people of the empire! Our lord has partaken of magic beyond imagination to watch over us as a immortal deity!"
In the months that followed, John withdrew to the southern continent's mountains, communing with his newfound ancestral spirits. Runes carved themselves into the landscape, forming mystical glyphs that pulsed with blue light visible for miles. Wild magic shaped the terrain into uncanny formations.
When John re-emerged from seclusion, even greater powers were at his command. He could summon eldritch storms with a thought, bending the sky into impossible geometry. With a gesture, mountains walked as colossi and primal beasts were conjured from the earth's bones to do his bidding.
The empire had never seen such raw, untamed forces at their emperor's control. John was no longer a mere mortal leading conquest - he had truly ascended to the status of a deity. All understood opposing him meant instant, cosmic obliteration. Complete dominance was assured.
With his godhood established, John turned attention outward once more. Scouts reported of one remaining great kingdom, far across the eastern seas, that had avoided imperial control through isolation. Calling it an affront to his dominion, John declared this last realm would be brought to heel.
Massive fleets were readied while John imbued the empire's armies with his divine essence. Now legionnaires fought with eldritch strength, magic-forged steel cleaving through all foes. Across the seas they sailed, descending on the isolated empire's shores with John leading from his thunderous flagship.
The kingdom's armies were overwhelmed by the divine powers now aiding the Sorcerous Empire. Cities fell in days as John unleashed cosmic wrath upon any who resisted. Finally, only the capital remained, the king sealing his palace doors in a last stand.
As John's divine armada laid siege to the isolated kingdom's capital city, the panicked king inside knew all was lost. He had heard tales of the emperor's transformation and the unstoppable forces now at his command. Surrender meant subjugation as a new territory of the all-powerful Sorcerous Empire.
Yet defiance was also no choice at all. Through magic-seeing auguries, the king witnessed visions of the cosmic wrath that would be unleashed should battle be joined. Mountains torn asunder, the very skies set ablaze - no military could withstand such godly fury.
With a heavy heart, the king ordered the palace gates be opened under a banner of parley. John's divine presence was announced, and he ascended the palace steps alone and unarmed, an aura of eldritch energies flickering about his immortal form.
"Your forces are unmatched, Emperor," the king said, bowing low before the godly being. "We acknowledge your power over all. I ask only that you show mercy to my people." John smiled, a cruel and otherworldly gesture. "Your kingdom is now the empire's eastern frontier. Rule well as my vassal, and your subjects will know peace."
With that, the last independent realm was absorbed without further bloodshed. News of the effortless conquest spread swiftly, striking fear into even the most isolated peoples. None remained beyond the reach of the Sorcerous Empire and its immortal Emperor. John had unified the entire known world under his dominion and dominating presence.
From Sorcerygrad, John now directed expansion into lands never before explored by imperial scouts. Maps were redrawn as new territories were contacted and absorbed with ease. Tribes of the artic north were the first to kneel, followed by sweltering jungles home to peoples like none seen before.
All bowed before the cosmic emperor's might. His divine essence now flowed through the empire's very veins, people and legions alike imbued with eldritch essence. Legions built ziggurat-like temples across every province and territory, devoted to the worship of their immortal emperor and patron god.
After a lifetime of conquest, none remained who had not acknowledged the complete and utter dominance of Emperor John. He had shaped the entire world to his vision, becoming the unchallenged master of a realm that spanned beyond any mortal man's wildest dreams. His was an empire of eternal glory, with the god-emperor himself as a beacon of absolute power.