It was a normal, peaceful day in Ponyville. Which was to say absolutely boring!
All over town, there was not a single problem, a single spat or fight; practically no entertainment was to be found unless one considered hoofball games to be entertaining– which Discord did not.
The Spirit of Disharmony himself observed the plain, completely ordinary day with boredom, resting on a cotton candy cloud. Idly, he created a glass and pressed the rim into the cloud, upside down. A sound like a pipe unclogging was heard as the glass filled with chocolate milk.
He drank the glass surrounding the milk first, then took bites out of the liquid.
Finally, he had enough.
"OH! Is this all there is to do around here?!" He yelled in frustration, slapping the cloud like one would a horse's flank (in other world's, that is– it would be quite rude to do here!) to make it start up, zooming around over Ponyville as he looked for something interesting.
Finally, he spotted a lone pony in the distance, their home on the edge of town. And an absolutely chaotic idea came to mind.
With a snap of his talons, he transformed the little pony (you) into an Alicorn!
Discord burst into laughter as you realised what had happened, squawking in shock as you took in your new... appendages.
"Oh~! Don't you just look lovely, my dear!" He said, teleporting beside you. "Look at you, practically a Princess! Or would you prefer Prince? King? Queen? Ooh~, how about 'Emperor of all Equus'?" He suggested with humour, making different crowns and staffs appear on you with each suggestion.