The Royal Canterlot Compendium: Complete Collected Codices of Equestrian History Volume One: The Fall of Harmony

Somewhere, in a long forgotten cave...lie a tool of great power. One of such magnitude that it could shake the very foundations of Equestria to the core. Both Princess Celestia and Princess Luna know of the artefact...and are fully aware of the rammifications that would befall the Nation if it ended up in the hooves of the wrong ponies.

For Twilight Sparkle however, newest addition to the Royal Crown of Equestria...it means a challenge.

A test.

It means facing down some of Equestria's darkest moments and learning from them. If she succeeds; she might just truly be fit to bear her crown. If she fails however...

It could mean the ending of a vision...and leave Equestria in ruin.