Cutie Marks, The Elements of Harmony, the Crystal Heart, alicorns, the rise of Nightmare Moon, the fall of the Crystal Empire-
These are seemingly unrelated events are believed to act separately from one another... But they aren't. Starswirl, the greatest magic-user of all of equine history, was on the verge of something big. After his disappearance, Equestria bore wittness to Starswirl's Laws of Magic. They were never questioned, for they were proven true.
No one questioned why Luna was banished to the moon by the Elements of Harmony only to be released from her Nightmare by those same Elements. No one questioned why the Crystal Heart was fueled by the citizens of the Crystal Empire. No one questions how one alicorn can raise both the sun and the moon, but fall to the power of a changeling's magic. All believe these laws to be concrete despite all the inconsistencies.
But when a tyrant hints at knowing more about the laws and magical theory, will this blasphemy be added to his list crimes, or will they listen to his warning of the future?
Image made with images from the following. Credit goes to the owners:
MLP Wikia
blingingjak @ deviantart