Talk:Princess Twilight Sparkle - Part 2/@comment-26973802-20131101003214/@comment-4604642-20131102052431

I think the "mysterious foe" is Discord pranking around.

http://www.equestriadaily.com/2013/10/season-4-episodes-one-and-two-expanded.html

He is mention there. So now I lean more away from Nightmare Moon, since she isn't even mentioned there.