Artist’s comment:
 
Another part of my pre-HeartswarmingEve Headcanons. Some parts of it are inspired by Tolkiens Silmarillion.
 
(first of all to me alicorns are more like Elves and NOT gods) In my headcanon True-Alicorns (born Alicorns) were the fourth tribe of ponies.
 
The Alicorns lived far down in the south of the Land (which we now known as Equestria). They established a Kingdom long before the three tribes had their Heartswarming Eve, and their realm was fertile and green until the one fateful.  
A Great Darkness came over them, a cloud that was casting its shadow onto their Kingdom. Then they saw him. A Great Goat. At the time none had ever heard of him. A coat of blue, horns massive and long and a Bell that was tied around his neck, and it was ringing their Doom. Grogar had come.  
He took the throne and no creature seemed to be able to stop him. How he had done it is unknown for no record exists. After that he let mountains of sharp and cold Rock rise form the ground, to surround his domain. They grew so tall, that no alicorn was able to fly over them, for the air was to thin up their for them to keep concious.  
What he did exactly to the Alicorns is unknown, but one knows, that through his corupted Magic and Spells now long forgotten, he turned them into the creatures that we call changelings. The land died and became dry and the remains of Grogars doing long after he was banished to the void is now known as the badlands.  
But one Alicorn managed to escape this fate, it is unknown how she had done it. She had to fillies with her when she arrived at my masters doorsteps.(…)
 
Starswirls Journals
 
The Creation of the changelings was inspired by Melkor creating the Orcs by torturing and crippling Elves. They both have horn and wings don’t they?
 
Sorry their might be some selling and grammar problems, please tell me I’m not a native english speaker, so that I can edit them out
 
EDIT: that alicorn in the picture was suppost to be chrysalis