“Your love… is not a pony,” said Twilight. “Because you’re not a pony. You’re not a pony at all.”
***
“A couple knocks to the head, and I’m your infallible source of knowledge.”
“I didn’t even have to lie to you. I just prodded you towards the wrong conclusion and you did the rest to yourself. You could wield the power of Honesty and I’d still be able to trick you, as long as you didn’t use your brain.”
“Being able to change one’s shape comes with many benefits, like being able to choose your identity no matter how life changes you.”
“You must understand, Twilight Sparkle. There are… things in the world, much older than you and much more cunning. If you don’t learn to think for yourself, to see past the schemes and machinations, there will be no hope for Equestria.”
“You cannot trust me. Any pony who could confirm my identity is either long dead or has since turned into something you wouldn’t trust either. In fact, you wouldn’t be entirely wrong to say Obsidian is long dead.”
“I’m more a creature of the Dissonance than a pony. All the same, I still have all the memories of once being Obsidian, the bearer of Honesty.”
“It looks like breaking my link to Honesty solved the problem of raving madness.”
“Gone. Everything I ever cared about was taken away from me by this war. By this… madness. This folly. And it won’t be over until I see this conflict finished and all the monsters gone. Only then will things be as they should be. Only then will the death, the suffering stop. I have waited for thousands of years, whole generations living and dying while I could do nothing.”
“A power of this magnitude subject to the whims of anger, love, or pride? A god with the heart of a mortal…is the most frightening thing you could ever imagine, Twilight Sparkle.”
***
“The prophecy the girls told us about… It was never about the Shattered! It was about you…
‘The One that was Broken’.”
“You’re not Obsidian… You’re Indigo.”
The glowing blue shape nodded slowly. “I am.”
And then suddenly, the vortex disappeared, and the sky above the mountain was torn asunder.