Talk:Princess Luna/@comment-24101825-20140902211546/@comment-25501592-20141005165609

If Sombra was corrupted why did the Crystal Heart kill him instead of purifying him?

Also I said possibly King Sombra, there's a theory he cursed Luna to magnify her jealousy before he was banished (his curses are shown to survive his banishment), and it was explicitly said in the show "the bitterness in the young one's heart had transformed her into a wicked mare of darkness: Nightmare Moon."