Her horn flares as she tweaks the spell matrices.

These need to be perfect. If she reaches triple-corona levels of magical usage, then a backfire could end quite explosively.

Sparks of magic weave amongst the room with the motes of dust.

Everything is prepared, but not everyone is prepared.

Of course, there's only one pony currently in the room.

Her goal is two ponies being in the room, in the simplest terms possible.

Her horn flares again as she triggers the spell cascade. Magic arcs between the items laid out on the ground.

Sombra's horn, the life rune. Then the reverse rune and the accompanying death rune, picked up at the same time. They rotate around the horn, clockwise.

The healing potion is poured onto the horn, and she begins the process of reconstructing his body, reaching a double corona's worth of magical output.

A black mane, flowing almost like shadowy fire. Would it rust, given appropriate lighting? She didn't know Sombra well enough for this information.

She purges all doubts from her mind. She is Twilight Sparkle, Element of Magic, and she is no ordinary unicorn.

Sideburns. She remembers him having sideburns as she sculpts the skull and the facial muscles. The same black as his mane. Twilight doesn't remember seeing any gray hairs within his mane, so all of his mane and sideburns will be black.

She doesn't let the thought of Sombra with a hot pink or magenta mane distract her. She simply allows it to pass by.

Ears, presumably they would be tufted for extra insulation. She didn't remember seeing any proper ears on him, but it could have been a case of not getting the right angle, or the crown covering them.

Teeth, she doesn't remember if his teeth were all sharp or if he just had a pair of fangs, like a snake. Or did he have a set of fangs both on the top row and the bottom row of teeth?

She cares not for this detail. All of them will be sharp.

Then comes constructing the gums. The tongue... presumably the tastebuds would grow back on their own? But then that would require encoding the ability to grow tastebuds into his tongue, and she doesn't want to be spending an ungodly amount of time fixing anything that went wrong with that and ended up developing into a tumor.

The nasal passages are easy enough to construct. Facial nerves and blood vessels were more difficult, especially when the blood has a tendency to leak out, given that gravity is a thing, and has been a thing since before Twilight Sparkle.

The afforementioned mare begins to work on the rest of the body. It would be easier to regenerate the skin and fur in one lump sum. Facial muscles weave themselves together in a complicated mass.

She isn't reaching triple-corona levels of magical output just yet, but reconstructing the rest of the body might just do it.

She begins developing a heart within her magical grasp. Funny how despite lacking a heart in the compassion sense, he has an organ that can be called a heart, that pumps oxygenated blood throughout the body.

The atriums of this heart develop well enough. Twilight Sparkle has enough control over her Magic to not let it flow with feelings of hatred and anger.

The ruler of Equestria remains impartial.

(Although, if she can pull this off, perhaps this might be her greatest achievement in this year.)

Blood vessels. Always with the blood vessels, carrying oxygenated blood to where it's needed. There are plenty of blood vessels in a body, and quite a few major arteries in the neck that can easily kill someone if they're sliced.

The wind pipe and esophagus are easy enough to develop. She's glad that she made the mouth beforehand.

The roof of the mouth comes into place easily enough, too.

She double checks on how well the teeth are rooted into the gums.

It's a good thing she did. No sense in the body losing its teeth immediately.

She figures she ought to double check everything so far.

Horn, sideburns, face, facial muscles, facial nerves...

She needs to develop the facial muscles and facial nerves, as well as inject nerves into the teeth, gums, tongue, and just about everywhere else.

How else would he be able to feel the roof of his mouth with his tongue otherwise?

She develops a jawbone within her magical grasp, and slots it into place, then begins to grow the nerves from there.

The bones themselves should help with structure.

The muscles go on afterward. Eyelids. Eyelashes. Scalp. Muscles for moving the ears.

Regrowing the nerves from the horn and attaching it to the head. Growing the spine and neck.

Cutting nostrils and a mouth hole with scissors.

Ponies can best be described as tubes. Oftentimes happy little tubes. They eat food, it goes through the esophagus, which is a tube, and then the stomach, which is a slightly more specialized tube, then the intestines, which are tubes with muscles that spasm to push food through for digestion...

And then it comes out the other end, thus completing the cycle in a tubular fashion.

Tubes.

Twilight does not let the thought of ponies being happy little tubes distract her either. She continues with her planned work.

It is a construction project, and she needs to nail everything in the right place. She has the tools and the implements.

Brains are tricky little things to develop, which is why she's leaving that for last, but she can at least develop the stuff around it.

The spine. The lungs. The nerves to both. The spinal discs.

Then there's the ribcage, the stomach, the spleen, the nerves to all of these, the blood vessels, the spleen.

The pancreas, for blood sugar, probably.

The little air sacs inside the lungs.

The vocal cords, the nerves, connecting the windpipe to the lungs, the blood vessels, making sure it'll fit among the heart and other organs.

The intestines, the muscles required for the intestines, the esophagus, the stuff lining the inside of the intestines, the stuff lining the inside of the stomach, the ribcage needs to be loosened a little but not by too much otherwise it's useless...

(Where does the pancreas go?)

The appendix is left out, because it's more of a liability than not.

The organ that stores magical energy (including the reserves), the lining of the organ that stores magical energy (including the reserves)...

She's reaching triple-corona levels of output.

Sparks of magic flitter to and fro within the stagnant air of the dungeon cell.

The bowels, the small intestine, the bladder, the liver, and various other things to deal with biological waste products. The kidneys, for filtering toxins.

The nerves. The nerves around the organ that stores magical energy. The nerves around the bowels and bladder. The nerves around the liver — The nerves, the nerves, the nervous.

(Twilight is not nervous.)

The intestines will sort themselves out when it comes to the positioning, given enough time.

The blood vessels. There are so many tubes to create. Tubes that carry blood, tubes that carry nerve signals from the brain, tubes that carry food.

The connections between the intestines and stomach. The connections between other organs.

The shoulderblades. The nerves. The blood vessels.

The forearms. The nerves. The muscles between the shoulderblade and forearm. The blood vessels.

The other side.

The hoof. The nerves. The keratin. The muscles between the forearm and hoof. The blood vessels...

Feathering. She suspects that, as an umbrum-turned-pony from the North, he would have a longer coat and an undercoat.

This can be done after she's finished with the muscles, blood vessels, and nerves.

She develops the rest of the spine, and the encasing for the organs. Then come more muscles in the torso, and then the pelvis.

Perhaps Sombra will have some minor issues. He'll get used to them. He should be considered lucky that he even gets a body.

Keratin on the hooves.

The back legs. Digitigrade, ending with a hoof.

And then the muscles.

Thankfully, Twilight Sparkle is fairly certain that Sombra doesn't have a cutie mark. It saves her from having to grab some reference material while she's constructing an entire body for him.

Sweat drips from her jawline as she pumps more power into it.

Eyeballs that slot into the eyesockets of the skull. Optic nerves, left hanging. Eyelids. Eyelashes.

She's decently certain that he must have cut his eyelashes at some point.

(The rattling is from the skeleton, she tells herself.)

(The horn on Sombra's head sparking with dark magic is an exhaustion-induced hallucination, or a contact point, hot with her own magic, she tells herself.)

She envelops the body in skin, finished with the back legs, and now starting on the five-or-so layers of skin that cover the muscle, as well as the blood vessels and nerves.

(The feeling of something growing outside of her control is a distraction, she tells herself.)

Time ticks by. The runes for 'temporary' 'cancel' 'active' and 'magic' activate, before she orders them to.

Her magic immediately peters out, and Sombra's body is dropped, unceremoniously, onto the floor. The cold, dirty dungeon floor.

The body looks dangerously underweight.

There's a crack in the dingy tiles that make up the dungeon floor beneath it.

Wisps of shadow seep from Sombra as the runes take effect, and Twilight backs off, ears pinning back to her scalp, before she casts a basic light spell.

His eyelids are closed. She doesn't remember constructing them like that.

A large portion of Sombra's body seems to have been left bald and without an undercoat that would be suitable for a Northern Pony (or umbrum-turned-pony) of his stature, but the bald patches seem to be growing smaller.

Twilight activates the wards, a magenta shield, sparkling, slowly seeps into a half-sphere around the body.

The healing ward allows for him to regenerate his blood.

The Magic Regeneration Matrix ward allows for him to recover his Magic.

Just for safety, she sets up a barrier ward right before the door, adjusting the spell matrix to allow her to enter and exit.

Nobody but her will be coming down here, to this room specifically, anyways.

Her tail swishes.

The body takes in a deep, rattling breath.

And exhales.

Author's Note

was intending for this to be much longer but my writing style doesn't allow for much longer.