The Terrarian Sun and Moon

The spirits landed on the ground under the temple. They looked around in a scanning way at their new creations, proud of their actions.

They first noticed the massiveness of the biomes they made. They forgot how they used the 'bigger on the inside' logic coupled with illusion magic to make it. If you flew outside of the boundaries all you would see is a a circle with a 100 mile diameter split up into two half circles. One cyan one purple. It was all wavy, watery, blurry, so you couldn't see where you were going until you entered. It kinda acted like a purple mist and cyan mist respectively.

Once entering the place, of course, you would be placed into an area in the biome relative to the place you entered compared with the size of the illusion outside and full inside. It was large, gigantic, planetary even. Thriving on the chaos energy it generates, not losing anything nor gaining anything. Of course, this in itself will do nothing for the scale, since it burns all of the chaos magic by keeping the illusion up. On the inside of the biomes you could see the vast areas of difference. The barren and gigantic pearlsand and ebonsand deserts, the chasm filled plains and slimer drooping jungle of the corruption, the blemish free lakes and fantasy like pine forest of the hallow. Each of the new biome containing more creatures than normal.

The pearlsand desert of purity brings the light mummies, undead brought back to life of the positive feelings from the native pixies of all the hallow, the same going for the ebonsand desert of vile bringing back the undead with hatred from the corruptors, only to add to the darkness of the area. The pure lands bring the cacti back to sentient life, walking around with the buds on their heads, happy with anything and everything, being the perfect playthings for any chaotic creature. The vile lands bring the sands to a more full life of evil, making the sandstorms and tornado's out to get you with destruction as their only virtue. The oasis of each desert is very rare, only two or three in each. Eagle guides of the pearls bring travelers to an oasis if need to, while vultures push travelers away from them.

The lakes of the hallow are roamed with peaceful manticores, as result of the merging of the biomes and the everfree forest, including more evil timberwolves in the corrupt jungle. The jungle itself is a corrupted everfree, while the lake plains are a purified everfree, all it working on its own, accepting travelers while having the corrupt one push them away. It was truly a beautiful sight to behold, and the spirits just looked on peacefully while the new draconequus species roamed freely near the glass walls, moving between them with ease.

Peaceful. That is, until two very angry alicorn spirits stomped down on the hallowed grass ground in front of them.

"WHAT HAVE YOU DONE?!?" Luna screamed at the two spirits in the royal canterlot voice. The spirits didn't even notice her, looking on at the draconequi.

Luna was beyond angry at the disrespect she had been given by these two. 'That. Is. IT!' She almost screamed in her mind. Luna then calmed immensely, making Celestia shudder. Luna calmly trotted over to the two spirits. Sol first, since he seemed to be doing something that she didn't understand. Celestia could only watch as Luna attempted to back-hoof the god before her, not knowing in the slightest what this would cause.

"Smack!"

The light freed from Sol's hands, causing it to fly into the air, bashing into the top of the glass wall, slowly making it's way down the wall. Sol looked a bit panicked, while Mon looked furious for the first time. Luna lost all of her rage in a single second as Mon's void filled body turn to her, an icy glare in his eyes equal to the anger of a sun. Luna even felt it as the moon back the elder god of darkness instead of her. She backed away as Mon walked up to her, almost freezing the ground in a pure black ice. Sol had started his work more frantically, calling all the draconequi to him, and then having the light move into their brains.

Mon was behind Celestia now, who was looked towards the god being in front of her with fear and confusion, while Luna was in a full on terror mode. Then Mon talked. "Do you know what you could have done..." He said. He didn't even yell, not in the slightest. Kinda like a growling whisper. He raised his voice into a lower voice. "Do you know what you could have done?" He asked again. Luna only gulped at the obvious anger from his voice. The worse possible, he was an angry god. "You could have ENDED your pitiful existence and your annoyingly ignorant world!" He said, almost yelling. Celestia was still confused at why her sister didn't do anything. He yelled again. "What could have you possibly thought doing what you did was intelligent in the slightest?!? What idiotic thought went through your head to believe that!? You could have ended this world, no, this UNIVERSE!" He yelled, in her face now.

Celestia put her hoof on his shoulder to calm him, but was stricken with fear and an icy cold feeling from the touch. She could still muster up some strength, though. "How?" She asked. "I don't particularly agree with my sisters actions, but it couldn't have caused that, could it have?" She asked, confused, even though fearful of the void figure in front of her. Mon slowly turned around to face Celestia, and only now she noticed something.

Mon was composed of the night sky, his body filled with stars, galaxies, comets, nebulae, and even the mythological cold stars. The cold stars on his edges, giving him his form and his icy cold feeling of anger he had right now. He was also always moving. The stars always moving inside him, comets always shooting, galaxies colliding, stars exploding, black holes imploding, everything. Then his eyes. She looked up fearfully and saw something to frighten her more, more than she was when Discord wiped out the mortal alicorns, or when the changelings trapped her within the cocoon. She saw his eyes. For the first time, she saw them. At least, she thinks she did.

When she looked up, she saw everything and nothing at the same time. This made black holes look like hoof-ball hoops. The vast emptiness of the endless abyss, more fearful than looking straight into an event horizon. She saw the void. She buckled down, shrinking under the stare from Mon.

"Doing what she did made Sol lose focus. This made the light do what it was going to do in the end after the process, and melt away the glass to nothing,letting the two biomes fight. The draconequi would then be forced to choose a side, because they wouldn't let themselves die being neutral. They would disperse, half vs half. A war of the most chaotic creatures alive. It would create an influx of chaotic energy, spreading across the planet, destroying physics in its basic form as it went. The magic would destroy all rules we live by. Even gravity. It would solidify or make air disappear, suffocating the whole planet. Or, it would rid the world of plants, letting the species die slowly on an unforgiving rock. Or, it would destroy all water, letting everypony die of dehydration with no hope. Or it would make clouds solid, crushing everypony under their weight, or a million other ways! It could even make you mortal, and feel all the age you have had, immediately dying and leaving the sun in the sky to burn or the moon in the sky to freeze!" Mon yelled. The princess both knew what happened, even though Celestia didn't start crying like Luna did, she knew the mistake of doubting two beings wiser and more powerful than themselves, especially when they are trying to right your wrong.

Luna, however, wasn't doing so well. She realized her mistake on what she did before he even explained it. She only could cry at what she could have brought once again when she was Nightmare Moon. She sat there, watching Sol instead, trying to forget what she almost did, and tried to calm down. Celestia was trying to comfort Luna as well, but she wasn't getting anywhere as she was terrified of the wrath of the spirits, but the fear was dwindling into a small amount of respect for power, growing slowly.

The spirits, however, were focusing on the wall and the biomes. The draconequi  were in front of Sol, who was trying to make the chimera's intentions good and actions good while chaotic, He was also holding back the Hallow, as Mon was holding back the Corruption. Mon was also melting the glass wall away, letting it go down and down into the ground. It took a while, having the shadow melt down and destroy the glass slowly, while it covered the corruption that connected the wall. In the middle, it was very much less than it should be. Instead of 500 miles, it was about 100. The shadows covered it all, while the light covered the hallow.

Eventually, the glass wall was destroyed, and at the same time, the draconequi were finished. They helped with their chaotic energy, gaining power from the shadows and light. They merged the two biomes, and with a giant clash and bang, the flatland in the middle turned a pure white with a small amount of floating islands. The entire landscape was covered in the pure white, acting like the hallow. There were splotches of shadow black land that acted like the corruption, but it was now fully reliant on itself.

It was complete, the chaos lands, home of the draconequi. The illusion took all of the everfree forest, now pushed a good 100 miles back from its original place and surrounded by the castle walls. As a protected, though, the chaos lands sent out another free reigning forest of pure blackness that started to blend into the landscape. It was always in shadow, and if you went inside, you wouldn't ever see the sky. You would be stuck in a labyrinth unless you had permission or wanted to leave. Even if you teleported in, you would be instantly flung out, if you flied over, shadows you harmlessly grab you instantly from the sky and drag you down to the labyrinth, no matter how fast you were going.

Creatures based off of the timberwolves and manticores were made to protect the kingdom against intruders of ill intent. They were made by the magic of the corruption and the void. If you were to make it further into the forest somehow, you would face beasts of pure shadow. No escape from these fiends, only light. The light was the only way to get through the forest until you got 10 miles from the castle walls. At that time, the void would swallow the light itself and throw it back behind the walls. The only way to pass this would be to be able to navigate a labyrinth in darkness, you would need to be terrarian with sensory vision. No maps to help, as it is always shifting.

The mane 6 looked upon the forest, hearing the screams from the castle, and decided to investigate, not knowing about the new forest that looked exactly like the everfree. It even grew safely around Zecora's home, so what could go wrong?