Who was responsible for easing the release of Discord, for the freeing of Nightmare Moon... for the invasion of Canterlot.

More importantly, what could possibly be his or her or its motives... plans...

Evil and good may not always be motives... but what could possibly be his motives... what could possibly have done these things... Is this foe kind or petty? His morality... what is it? What is he? Who is he? All he is... total ambiguity.

Most importantly, where has Fluttershy disappeared to?