Long Version (scroll down for short version):
Many have wondered why suddenly a new Alicorn (Unicorn with wings) exists, where presumably Luna and Celestia are the only ones and practically gods.
I have a theory. Long ago there were only Earthponies and Alicorns (the Alicorns probably created the Earthponies from their own blood, by stripping them of wings and magic power to create simple workers for everyday duties... but that is not really important for this theory).
As an Alicorn lived much longer, was larger, could fly and had powerful magic at its disposal, they were in every way better than Earthponies. It is not surprising the Earthponies began worshiping them as gods.
Life was good for the Alicorns and they lived in luxury while their worshipers did the hard work. But while sloth is nectar for body, it is poison for the mind and thus many Alicorns simply got bored with life. They stopped procreating and over many centuries they slowly died out until only 2 were left.
Luna and Celestia.
In an attempt to save their blood they began interbreeding with the Earthponies. Again over many centuries the bred again and again with their own offspring (intermixed with more Earthponies to keep the genetic pool somewhat fresh) they created the hybrids now known as Unicorns and Pegasi. Neither wingspan nor hornsize would reach an Alicorn's, but Luna and Celestia were happy at least some part of them lived on.
They went back to being the gods of the ponies and experimented with ways to lengthen their life span (Such as going into stasis to regenerate as Luna had done the last 1000 years. Sadly she was a bit groggy after 1000 years of hibernation and needed a proper weak-up call by some bright light)
Now that Earthponies, Unicorns and Pegasi lived together they also interbred with each other. And while usually the resulting babies had the physical appearance of one of the three types, the bloodline was kept intact (as could be seen with Mr. and Mrs. Cupcake).
At very rare occasions though it can happen that the blood of Earthpony, Unicorn and Pegasus mutate and combine in a way to create a new Alicorn. In most cases however the Alicorn is imperfect and has visible deformations such as: underdeveloped wings, crooked or really short horn, no magic, chaotic magic, etc.
Cadence is one of the very rare and very lucky cases, where every detail fell into place perfectly and she became a full Alicorn.
The Changeling princess is an imperfect Alicorn. She has several mutations, such as a deformed horn, fractured wings and enlarged fangs and thus was shunned from the other ponies.
She did however got the full magic prowess of a proper Alicorn which she used to create offspring similar to her with some of her power.
And that is how Equestria was made :3
Hasbro wanted a new princess toy they could market
PS: On a totally unrelated note. I have created an imperfect Alicorn character nick-named "Chicken Wings". You may guess why ^^. Expect upload this evening when I get home XD
6 years, 9 months ago
23 Apr 2012 11:22 CEST