Yggdrasil, the supercomputer god-tree which runs all of reality, has suffered a cataclysmic breakdown. In order to prevent all of existence from falling apart, uncountable worlds within the Multiverse have been placed into a near-permanent time loop. Based on the idea created by Innortal: These are the Infinite Loops, and this is their insanity.

Having found Starswirl's message for her, Twilight once more finds herself facing forces far greater than herself. To even stand a chance she'll need to travel further than ever before, and forge some unlikely alliances to bring down the powers that have manipulated her entire life, and retake control of her own future. Conclusion to the Time Loop Trilogy. Reposted with permission.

Twilight's life is slowly returning to normal. However when a letter arrives informing her that the time loop spell she cast is causing severe damage to space and time itself Twilight tries to summon anypony who will know how to fix it. The pony she gets is the last one she ever thought she would meet... and nothing like she expected him to be. Reposted with permission.

Required reading to understand sequel. Reposted with permission.

Twilight gives her life to stop a changeling invasion. Repeatedly. Reposted with permission.