Twilight Sparkle and Horizon develop a new spell that will change the world, forever.
Arcus is a pegasus colt who decides to fly away from home to the ancient Pegasus capitol of Zephyns in search of adventure and his cutie mark. But his journey is interrupted by the appearance of Sundrop, a young and abandoned pegasus filly.
Scootaloo is forced to face the fact she has passed away.
Quantum Locking · 12:11am
I expect there might be some confusion in the next chapter about the time machine but for the geeks out there feel free to look into this subject.
Imagine that the time machine or "box" is the superconductor and the magnetic field is the "time field". The box becomes locked in space and time allowing the contents, which are shielded from the time flow because of something akin to the Meissner Effect, to be transported through the flow of time unaltered. If the box did not exist the objects inside would not be Flux Pinned in time, or protected by the Meissner Effect. This means that as the negative time is applied, the objects will move as they did to get to that point (imagine rewinding a video). So if you cast the time spell on yourself, then ran a marathon, and then released the built up energy of the spell to expel the negative time, you would be running the marathon in reverse as you move back to that point in time. You also would lose all recollection of the events leading up to that point as well as losing your age etc. This is simply time moving backwards. You would have no recollection of even casting the return spell. You would just go back to the instant before you cast the original spell. This would most likely cause a loop, but it would be stable and limited to one timeline.
In another example, let's imagine you put yourself in a "meissner effect bubble" of time, and then cast the same spell, but without a box to quantum lock you. If you waited six months and then cast the spell to expel the negative time being accrued, you would be stuck in place as the earth itself moved 180 degrees around the sun and left you to float in the void of space for dead. (also, the sun would move and the galaxy would move and etc. etc.) The frame of reference of the universe would be moving around you as time passes and you would be unaffected by the X, Y, and Z changes.
Now, in the final example, let's imagine you find a way to be in a Meissner effect from the fourth dimension (time field) and also manage to place yourself inside a quantum locked object. This would allow you to bring back your memories, physical self, objects etc. while also being able to emerge in the exact place as well as the exact time when the original spell was cast.
The only catch is, maybe the Meissner effect bubble causes some problems. Maybe cutting and tearing through time has consequences for the fabric of time itself. Maybe the matter brought through in the bubble has problems interacting with what it once was.