Harry Potter and Twilight Sparkle have been best friends and penpals for a long time. She was his first friend, and they became the closest of companions after Twilight found a way to summon Harry to Ponyville.
When Twilight perfects her spell to bring her long time penpal, Harry Potter, to Equestria, she plans a relaxing weekend vacation away from Hogwarts before the Yule Ball. However, fate has other plans as the two are thrust into an adventure of friendship and magic. Now Twilight is more involved with her friend's (and the wizarding world's) affairs than ever, and the bonds of their friendship will be tested.

This is the story of Kitzumi Nova Nightfoal Silvermane, and how she deals with the outcome of a spell gone horribly wrong. Kitzumi, known as Kitzu or Kizu by her friends, by means not entirely understood, somehow manages to go back in time, and finds herself in the ruined castle of the Two Sisters where she is found by Twilight Sparkle. Twilight is astonished that such a young filly would be so far out in the forest, and even more so when Kitzu identifies Twilight as her mother.

Kitzu is now faced with having to live in a past were no one knows her, and Kitzu isn't like other ponies either. Kitzu is part enchanted fox. A fox pony to be exact. Not only that but she has both wings, having been born a pegasus, and a small horn that's barely noticeable when she first arrives in the past. Just a pegasus with a button horn. How well will she cope with her situation, what will Twilight do now that a foal has been suddenly dropped in her lap? Not to mention the paradox of raising a foal who hasn't even been born yet. To make things even more complicated Kitzu is afraid of Princess Celestia while looking to Princess Luna as a second mother. It wouldn't be long before Luna finds herself doing everything she can to help Twilight.

There have been a few minor alterations for the sake of clarity, and with any luck I've found the majority of the issues. And to be honest I really didn't find a lot. I've lost track of how many times I've been over this and everything else, and quite frankly, yes there are probably more mistakes I've missed, and at this point .... take it as is because it's not really worth the trouble for something I'm not getting paid for. If I was, it would have professional readers and editors. Some of the best story tellers in history never worried about whether or not they had everything perfect.

Rarely, a Dark Lord can conceal things from their own followers, and conspire in their own death. Perhaps that's why so many video game bosses are so easy to kill.

Similarly rarely, A Dark Lord may be immortal- or have some sort of curse causing him to return.

And very, very extremely rare is a Dark Lord that falls into both categories- and fights against their own supporters after their own death.

Lord Voldemort was one such Dark Lord. He also had quite a surprise waiting for him when he returned under a new name nobody would ever suspect her under- and learning that Harry wasn't a boy either... wasn't it. As a matter of fact, neither she nor Harry were ordinary by any stretch of the imagination, despite looking the part!

Really too bad she was sick and tired of being powerful. That meant it was a good thing there were so many strange new students about... right?

Possible triggers: Rule 63 of the Internet.

A new story that could potentially be called a rewrite of Accidental Invasion despite focusing on a very different storyline, thanks to certain (major) story elements I'm borrowing from it- and reworking to be a little more realistic, of course. That said, I'm also raiding some concepts from The Boy who Disappeared, and from all over- you could also call it a culmination of all my works.

Updates on Thursdays.

It's worth note that this story is meant to be a lot more... comedic than my other stories. I'll be keeping it "serious", but it's more likely to be "silly-serious" with silly stuff sprinkled in. Not nearly as random as, say, The Gate... but still a bit. You'll get what I mean by the end of the second chapter.

And... I suppose I should say it, shouldn't I? Tags may be updated as the story progresses. Emphasis on may, because I've said that every time but really never gone back to update the tags even when it was warranted.

This is a fic based on the Time Loop Files, the format of which was first codified by Innortal on fanfiction.net.
Here's a brief guide.
The basic idea is, one character (the Anchor, usually the main character of a fictional setting) is looping back to the very first moments of their parent series every time either they die or some kind of time limit expires. They of course end up monumentally stir crazy given enough time.
Eventually others start to loop as well.
The reset is not always perfect. Sometimes a loop's history will be different to the "prime" loop, or canonical plot.
"Crossover" or "Fusion" loops also occur, randomly. These can involve the home loopers having a guest, or the anchor for one universe spending time in another, or replacements of one character by another.
Vacation Loops are where the Anchor (or others) decide/s "buck it" and lets off steam by doing whatever comes to mind. There's little or no attempt to maintain the original timeline.

In addition, and particularly more recently, it should be known that this story has a collaborative element to it - people may submit loop ideas or loops, ideally at the Spacebattles thread (a link to the current version of which is on the Trope page), and they may become included.

There's two page image options, thanks to Filraen - the current page image has been edited by the original creator from this work of theirs.. The other one is here:
http://hourglass-vectors.deviantart.com/art/MLP-Loops-466030169