The timeline, it is set in one direction. It seals the fate of people and if one were to drastically change their fate, the timeline would be forced to correct itself. Those who escape death when they were destined to die, will meet their maker soon enough as the timeline corrects and resets itself to its original state.
Events of the past effect those of the present. The man who sacrificed himself to save the one he loved when she was destined to die, was effected when the timeline shifted, it shifted back to its original state. She died moments after and he, stuck as a hideous beast, was caught in the chaos that occurred in that moment. But in his attempts to save his love once again, he caused the chaotic wave to spread outwards and consume the entire city to which he lived, and protected.

"Is, is he alive?"
"His arm........it's moving!"
White eyes open to the sight of grass blowing in the wind. His silver hair blowing with it. His black cape torn and he wore nothing but torn black clothes. A scar tore across his face and he struggled to stand, even taking a breath seemed as a challenge. He stood, and in front of him was two men in armor running off into the distance. Large cliffs surrounded him, he looked at them and felt that he has seen them before. The archaeopolis flashed into his mind, he instantly fell to his knees, the city was gone and there was no sign of it ever being there. How long had he been gone, or asleep? His heart instantly filled with anger, he remembered everything that happened that day, the civil war, the princess' death, and who started it all......and what he did to try and stop him.
Just at that moment a dark sphere opened above him. It created a vortex that began to pull everything into it. He looked into it and simply let it the sphere take him.
When he came out of it. A large fiend sat in a throne in from of him. The silhouette of this monstrosity was huge, the its horns shot out and up from his head, and six eyes were glowing in the darkness. He heard a tongue curl. The fiend lifted one of its hands from the side of the throne and a piece of paper cloaked in a red flame appeared.
"Your strength is great, and, I desire it. Give me your soul, and I shall tap into your locked strength. You shall gain your power back!"
The fiends voice echoed up and down the long hall of throne room.
"Sothe Zephyr. Let me, Nulgath, give you that which you most desire. Your heart is dark and filled with hatred. Fuel it and you shall get revenge."
"Nulgath........I.......shall." Sothe reaches out his hand and simply touched the paper.
"The contract, is signed, you have gained your strength back, your soul however, is mine!"
Sothe's hand was then cloaked in the red flame. He was blasted back and sharp talons shot out of his spine. He grew a long tail that swung back and sliced the wall. He arms tore open and out came demonic arms with veins about to blow shooting out of them. Claws shot from his fingertips, and his legs grew in height. His face tore open and out came a beast whose roar was heard by all of lore. Four bright yellow eyes glowed in the darkness.
"Welcome to the nation. Sevithal The Devourer