Have you ended wondered about Death? It ain't always pretty dying, but the ones who die say it's faster than falling asleep, ones who survive it say it was "peaceful", and many other things, but can reincarnation exist? Lets find out...
After the mane six have died, they all wake up in a very large black void with nothing but themselves that they can see without light. Their chests was splattered with their blood but also has a long line on it to show where the spears have stabbed them.
"Where are we? This doesn't look like Heaven or Tartarus at all." Twilight said as she looked around and could only see her friends due to the bright, purple light coming out of her horn. She hoped there would be some way out, but everywhere she looked look infinite and the same except with her friends at least.
"I don't know, Sugarcube," Applejack replied, noticing her hat is gone, "But if we're not dead or alive or whatever, we gotta get out of here. Remember, Nightmare Moon must be stopped, one way or another."
"Don't you see where we are and what happened to us, Applejack?" Rainbow Dash pointed out, "We lost the Elements to Nightmare Moon's spell, she then killed us with those spears and now we're here. I don't think we're alive anymore."
"Rainbow Dash and Applejack do have some points." Rarity stepped in, "We are dead, but it doesn't look like we're in Heaven or Tartarus. My best guess is that we're in a coma after the impalement and due to us being the Elements, we all managed to meet in one mind. But we must escape out of here."
While they were all were busy discussing their plan, Pinkie then noticed something in the distance. It was blue, big, glowing and coming towards them very fast from a distance. She then walked to her friends and questioned, "Um guys? What's that?" She points to the giant blue ball coming right at them. Twilight then says, "It looks like a-" but before she could complete their sentence, they were all struck by it, causing them to feel like they were burned severely by 1000 blazing suns.
When they actually woke up, they were in an extremely dark room and couldn't see anything this time. But as they looked at their hooves, they noticed how they were much longer now like if they grew taller overtime in the "coma" they thought they were in. Not only that, but their fur was much more darker than it was before, as if Somepony tended to dye their fur colors to black, but their manes and tails were also darker but flowing like an Alicorn. They also were now able to see stronger and at very large distances. Soon WAM came open the double doors as the blue pony from before came, but was limping or drunk as she wasn't walking straight and started to almost fall to her left or right. The blue pony was........... Nightmare Moon.
She smirked very with glee. "Ah, my creations have finally awakened." she said to the six, "I think you all wondering what happened to you all. Well for one, I wasn't actually responsible for the spears. I think I know who did it, but I'll tell you all later. Now's the time to show you all your new forms now." She showed them all a long mirror and they all gasped. The reason why they looked like Alicorns cause they have BECOME Alicorns. Their forms look very similar to that of Nightmare Moon herself when comparing the eyes, facial structure, size, pose and form. But what makes the new mane six and Nightmare still different is that the six still have their own fur, mane, tail, and eye color but darkened, along with having different cutie marks and the six having no armor like Nightmare has.
Moon also noticed this and chuckled. "Oh yeah," She said, "I just finished creating those as gifts for your rebirths." Her horn glowed very bright purple again and a large amount of mist swirled around the six and during this, they felt something hard but cold get hold onto their faces, hooves and then the rest of the body. When the mist cleared, they gasped again when they saw they now have full armor very alike to Nightmare's, except theirs have their cutie marks on the neck plate. They were about to say something, but noticed their voices was also corrupted and as loud as the Canterlot Voice.
They all finally spoke together, "What did you do to all of us, Nightmare Moon?!" They all soon took a deep breath and decided to not yell due to it hurting their throats a bit as they haven't drank anything in a while.
The dark Alicorn spoke with no tone of aggressiveness, "I simply brought you all back to life. After your deaths, I figured this was too early of blood spilled so fast, so I resurrected you all using a dangerous spell I made. It's different to the one I used to turn some loyal Royal guards into Batpony guards cause you all weren't alive or even guards. So I was forced with the only way to bring you all back: I had to take six small pieces of my own corrupted soul and put them inside your wounds. It worked as your wounds patched up at the cost of leaving hideous scars on your chests and that the soul pieces turned you all like me. It also explains why I walked as if I was weak as it's gonna take a while for my soul to regenerate. But hey, at least you all are still alive now."
The new Nightmare six couldn't say a thing. They were just speechless. They were speechless that Nightmare Moon, the evil tyrant Alicorn that wanted to bring havoc on Equestria had given up pieces of her just to revive the ones that planned to defeat her. Soon, Fluttershy asked in her quiet but still corrupted tone, "But what happened to our Elements?"
Nightmare Moon replied, "Don't worry, Fluttershy. They're alright. You all thought I actually destroyed when in reality, I just only shut them down. But now they're as corrupted as you all as they're connected to you six like your new souls. I call them now the Elements of Nightmare. Anyway, I suppose you all are wondering who I think might've killed you all, right?"
The Nightmare Six all nodded, but the dark Alicorn sighed. "Alright," Nightmare said in a sad tone, "I'll show you but you all won't like it. Follow me out of this room." She proceeded to the room where the mane six have died in with them following her and they see the bloody golden spears on the floors along with their own blood around each spear, but now all dried up. They heard Nightmare mutter, "I can't believe SHE did this to them. She really is a monster." but they ignored it. Nightmare simply sighed, shed a tear, picked up one of the spears and cleaned the blood off it. "Look." was all she said. The six soon gasped again but Twilight yelled loudly, "NO!". Etched onto the golden spear was the shape of a sun, a familiar cutie mark.
And thus, their new life begins........ As the new Elements of Nightmare.