@Background Pony #B6E7  
The forces of good could be Cadence, and new elements. Actually this has me a bit inspired. Mind if I use the idea?

@Background Pony #B6E7  
Yeah, they call it Warhammer

Whoever wins, we lose.

Found this comment from the DeviantART page, with slight modifications:
 
“Once upon a time, in the magical land of Equestria, two regal sisters brought harmony upon the land and their subjects, all the different kinds of ponies, with their powers over the Sun and Moon.
 
But as time passed, both mare each became consumed by a different form of darkness: The younger sister, who raise the Moon to begin the night, grew jealous of the elder, as the ponies relished the day, but shunned the night.
 
For her part, the elder sister, who raised the Sun to bring forth the dawn, became consumed by her desire to protect her subjects from any and all forms of harm, and she come to see her younger sister’s night as one of the things that caused it to them the most. She wanted her sun to shine for eternity, so her ponies would never again hide in the dark.
 
The elder responded with younger’s desire for respect with suspicion, and the younger responded to being her elder’s shadow with bitterness. Words were said that could never be taken back, mistakes committed that could never be fixed, cracks form that could never be mended. One faithful day, both came to blows over their desires for Eternal Day and Night, and transformed simutaneously into wicked mares of darkness: Nightmare Moon and Solar Flare!
 
They vowed they would not rest until the other is vanquished and their respective charges sit upon the sky for all eternity. Yet, as both became equals in power, they could not prevail over one another.
 
For the next one thousand years, they fought a never-ending battle for dominance. The world would be trapped in an nightmarish stalemate, divided between the blistering desert ruled by Solar Flare and the dark, frozen wastelands under the thrall of Nightmare Moon.
 
Ponykind and the other sentient races would know short, brutish and terrible existence under these two tyrants. When not used as soldiers, chess-pieces and expendable armaments as the two dark goddesses wage their eternal war, fall prey to the dark magic and horrific monsters of both day and night that had overran the war-torn planet.
 
Harmony is dead. Evil, suffering and madness is everywhere. There’s no hope, no peace, no respite, only an eternity of carnage and trembling rage of the gods.
 
And in the ancient, burnt out ruins of a hill side city, a certain Spirit of Chaos sits back inside his prison of stone, eating imaginary popcorn, and laughed in glee as he watches the whole world burn…”
 
— Tale of the Two Tyrants and the Eternal War —
 
This should be turned into a fanfic…

A war fought with equal powers. A war in which there could be no victor.

Ah, dammit! DX

No matter who wins, everyone loses.