How should I end an eternal war between three powerful empires?
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It was an eternal war between 3 empires and their vassals.
Long long time ago, there was a Primordial God, the "Great One" ruling the world with his three assistants: Pal the general, Mag the priest, and Zin the chancellor. They murdered the Great One one night for unknown reason. After the murder, they got some Great One's power and established their own empire, and claimed that the Great One was in his long sleeping, left humankind to them 3 to rule.
Pal soaked up the Great One's blood and got the Great One's strength. His empire was ruled by he and his descendants. They were stronger, smarter, higher, and more longevity than normals, especially emperors who were always inherited by the eldest son because the blood would be more pure. They tended to have endogamy marriage to strengthen their blood and power.
Pal's empire had a social class system by bloodline and strength. More noble, strength and military exploit you had, more higher position you'd get.
Mag catched the Great One's soul, but it was too heavy for him to absorb, thus he divide it in to three, and transfered one portion to his son, and another one to his unborn grandson. Thus his empire was ruled by him, his son, and his eldest greatson. They kept reincarnate endlessly in to the main lineage of the imperial family to become the direct-line great-grand son of themselves, thus all 3 generations could always live together to make sure the imperial power would be inherited stably.
Mag's empire had a mystic reincarnation art, but only imperial family known the secret. They controlled all important positions people's reincarnation, to make sure political power remained stable.
Zin seized the Great One's eternity and made himself immortal. His empire was ruled by him, the "Immortal Emperor", and his family and bureaucratic officials. He was by far the smartest human in the world, every policy, strategy, conspiracy, and history of his empire was all in his mind. He tried to be omniscient to his empire, then to the world.
Zin's empire had a huge bureaucratic system. All official holders not only had to report their ruling information to the Immortal Emperor Zin, but also had to spy on others and report to Zin secretly.
The war between them was never end, because all 3 empires tried to get each others god power by conquer eachothers. Mean while, they faced neverending factional struggles for imperial power, the societies were suffocating because of rigid class distinctions.
Vassal countries were trying hard to survive in the endless conflict. Some of them were seeking the possibility to found a union to against 3 hegemonies, although it was nearly impossible.
How should I end this story? I was thinking a big battle between all countries, and making the Great One revive to avenge humankind. Is it a good ending?Please give me more idea, thank you!