Part 1 of the Shadow Trilogy

As Twilight Sparkle enters her third year amongst her friends in Ponyville, she finds herself plagued with strange dreams of an unknown power whispering dark secrets to her. The voices speak of Power, of the strength to protect what she holds most dear, of the great knowledge she could attain, such that no force could ever threaten her lands, or her friends, ever again.

Though she shrinks from this voice, the lure of greater knowledge, of magical power far beyond what she currently knows is enticing and alluring to her, eating away at her resolve even as the lack of rest begins to wear her physical defenses down.

What is this voice, and what does it plan for the most faithful student in Equestria?

Note: Events diverge from canon following the events of "Games Ponies Play"

Part 2 - The Twilight Fall
Part 3 - The Twilight War
Links removed in compliance with Fimfiction policies

As Twilight Sparkle awoke one morning from uneasy dreams, she found she had been turned into a changeling.

How has she become a changeling? How will she adapt? How will her friends respond? And what new terrors will her metamorphosis bring?

Cover image by the fantastic Carnifex... or Siansaar... I can't tell which. You can find more wonderful works here: http://siansaar.deviantart.com/

EDIT: Featured... nearing 1000 Favorites... multiple pages of comments (swoons)

Thanks for everything guys. I never expected this thing to get so popular. I need to rework the second chapter, but it looks like there's going to be a blue moon every Friday for a while yet. Thanks again for your support and please keep reading and reviewing!

EDIT2: I've updated the character list again, a little preview of the second story arc...

EDIT 3: Just doing a quick character update to account for changes made to the next Arc...

Discord has been defeated, and Twilight and her friends are eager to get back into the swing of everyday life. Shortly after the end of the victory ceremony in Canterlot, Celestia asks a favour of Twilight, to put Discord back where he belongs, and the ever-faithful student accepts.

By noon of the next day, however, Twilight has both a startling revelation, and a terrible new secret to keep. Otherwise, the last thing she sees may in fact be the statue garden.

Acknowledgements
Edited and test-read by DreamVirusOmega (aka PoisonClaw) and Nonagon
Heavily inspired by and adapted from Garden Party: Petrified by PumpkinHipHop
Cover art used with permission by DocWario