Who is the mysterious disfigured colt, Mason? And what does he have to do with Diamond Tiara?

Essentially creepypasta. Be warned.

This is a ponyfied version of a horror-ish story I wrote a while ago.
Some parts may be kind of hard to wrap your mind around, but converting humans to ponies is hard for me.

I NEED feedback, corrections, critiques, compliments, new ideas, I love them all!