User blog comment:ShinShinTo/After watching Fairy Tail episode 167, I wonder.../@comment-5481363-20130202162438

To answer your first questions (About RT), you'll get your answers in next week's episode :)

About Obra, I suppose his magic must be some sort of taboo/lost magic, or Alexei simply doesn't want the council to suspect they were the ones behind Lucy's loss.

About Mato, some people speculate him to be the King of Fiore (because of his VA, and stuff).