The weakened elements

Author's note: I suck at pony lore, so I am partially making my own for the start. Enjoy, though this is just a fairytale (Chapter 2 kicks things off) also, I need cover art!!!

Once, in equestria, just after Discord's first banishing and Nightmare Moon had been on the moon for 10 years, was a royal alicorn. Running the entire kingdom alone was tough, and the intense magical power to keep the day/night cycle running was an almost impossible task, which left her oftentimes sapped for energy. As a result, knowing well that danger might arise, she got a task-force of 3 ponies. These were the original elements of harmony.

These ponies were given the gift of enchanted crowns, which, powered by the power of friendship, could seal away evil. The first usage was when the unicorns decided that they would take ownership of the land. It was a bloody battle. Almost all the earth ponies were knocked to the ground. By the time the elements of harmony came, dead corpses lined the ground like a violent carpet. When the ponies unleased their power, all the warring tribes just vanished.

Needless to say, the element's instructor was furious. All the warring ponies had just been expelled away from this life!!! Outraged, the royal alicorn gave them the power to redeem, and told them to use it properly. However, after redeeming several wars, the powers faded. Then, without warning, they cracked. This would've been bad, but by now everyone had gotten the idea of what peace was, so there was no need. But when Nightmare moon returned, we needed harmony's return. And that was when you came in.