Thousands of moons ago; long before the coming of the Celestial/Lunar Reign, Discord ruled the once-proud nation of Equestria with an iron fist and paw! All ponies feared the draconequus and his crazed antics: turning rivers to jelly; making grass poke whomever walked on it; replacing all salt with sugar—truly he was a madman of the highest kind...
Though his love of chaos was still very evident, this Discord was different than the one the ponies of the present time had come to know; this Discord appeared much more malicious in his brand of chaos—he seemed to enjoy causing much suffering to others, as long as it brought him amusement. Additionally, he never intentionally created anything that anypony could obtain any form of enjoyment out of—that's why he did away with his jelly rivers, as some ponies began eating them. He instead replaced the jelly with even more salt, and the lord of chaos did indeed get a hoot out of that one.
But, even with all the anarchy rampant throughout Equestria, Discord was still not satisfied...there was clearly more of this world that demanded his attention, what with all those creatures trying to live in "peace" and "harmony"...those words made Discord wretch...
Now, why does Discord not simply go out and disseminate mayhem and ruination to the rest of the world himself?
Well, even though the draconequus' heart did not feel for any but his own self, Discord had grown accustomed to the land of Equestria and the ponies who live there—meaning he enjoyed tormenting the Equestrians more so than any other species he has previously reigned over. But "feelings" aside, Discord could not idly sand by while there was certainly so much peace and tranquility somewhere out there, and he was determined to find a way to put an end to it.
For many a moon Discord pondered this dilemma, believing there to be an ideal solution that would bring about chaos to every corner of the world. He would stay up for days and nights(though you wouldn't be able to tell, as Discord only moved the sun and moon when he felt like it) racking his brain to come up with something—anything at all that could be a viable idea. Then one day, as Discord was fly-fishing(which is exactly what you think it would be concerning Discord), an idea hit him like a bolt of lightning(whilst a pony's home was simultaneously incinerated by lightning upon his forming of the idea).
If Discord could not strew bedlam across the world himself, he would need someone else to do it for him—or in this case, something...
Discord acted quickly on his idea, and began to form the object which would carry out his will...a cloud imbued with his very dark magic which would give the cloud all the power it needed to wreak havoc in the same manner as the lord of chaos himself.
Why a cloud, you ask? Because Discord felt a cloud would not be too conspicuous, enabling it to surprise whomever it came across with its hidden powers—which just adds to the fun!
But, merely creating a cloud and giving it his own power wasn't good enough—the cloud would need to think and act just as Discord so it would perform properly...and this was the difficult part for Discord...
Discord readied himself before his vaporous creation. He stared at its billowy mass as it radiated with the dark energy surging through its entire form. How very proud Discord was with his creation...out of all that has spawned by the draconequus' hands over the course of history, none could match this weapon of mass disorder. Though Discord was already a legend for all that he has caused in the past, he believed it would be this very object which would cement Discord into his place in history as the one and only lord of chaos! These thoughts of infamous prestige caused Discord to burst into maniacal laughter, which is when one could truly see the draconequus' predominant insanity. He fell to the ground as his cackling continued, unable to hold back his deranged laughter. He rolled through the dirt and banged his fist on the ground; never holding an instant of silence with his chortling. Not many would doubt that there was no other creature in this world as unhinged as Discord.
Eventually, the lord of chaos managed to tire himself out from his seemingly inexhaustible laughter, and pulled himself back up onto his feet. It was then that Discord asked himself what he had been doing, as he had actually made himself during his fit of uncontrollable cackling. Upon noticing his chaos-bringing cloud, the memory resurfaced, and Discord set himself back on track with completing his magnum opus; and the ultimate constituent of his creation was something which even Discord dreaded to obtain—but obtain it he must...
Taking a deep breath, Discord enveloped his hand with dark magic, and aggressively rammed his fist into his own chest. Already the piercing pain struck right through the draconequus, and even managed to draw out a tear from the unfeeling Discord's eyes. But something as trivial as pain would not impede the chaos lord's personally laudable work. Discord sucked the tears back into his eye socket, and persevered with his modus operandi.
Though this procedure does indeed seem painful, it is not entirely as it sounds. When Discord forced his fist into his chest, the magic surrounding his hand allowed for the limb to phase through his body without causing any physical harm to Discord—but of course, physical injury is not the only kind...
When the initial blow was made, Discord was not attempting to punch through his body, but rather inside it—into the part of him which existed beneath his mortal body, just as with all other living creatures in the world; a part which could not be reached by any physical means; the part which made every sentient being who they are; and it was this very part which would make Discord's cloud the way he wanted it to be...
The lord of chaos pressed on, pushing to the limit the level of abuse he could endure to obtain the crucial component in his master plan. Eyes straining and teeth grinding, Discord reached further within himself, utilizing every ounce of willpower he had to keep going. Then at last, Discord felt a stirring deep down in his soma; he had gotten hold of that which he required, but it was not over yet. Neither quickly or slowly, Discord pulled back his arm. As his hand emerged from the inner workings of Discord's physique, something else followed suit; grasped between the tips of Discord's talons. Discord continued to pull delicately until the Stygian object was fully extracted; severed from its link with the draconequus' inner body. Discord slowly felt the relief returning to him, his dreadful experience finally over. He then cast his gaze towards the strange item clasped within his eagle talons, showing his pleasure with a sinister grin.
Cloaked in pure blackness, the strange object was unlike anything seen in this world. It was not too large; about the size and length of Discord's arm. The wispy item swayed about, as if it were a living entity itself; which, in a way, it was, for this arcane object was an extract of Discord's very essence—it contained Discord's personality, his mind, and all other traits which formed Discord into the feared bringer of chaos as he has made himself known to all. This is the reason why this component was the most necessary of all, for without it, the cloud could never carry out Discord's intentions in the exact way as the master himself. It was worth every ounce of excruciating pain Discord suffered in order to acquire it, and now was the time for the rest of the world to see and know the work of the lord of chaos for the remainder of history.
Discord approaches the pulsating cloud, and enveloped his lion's paw with dark magic, just as he had done before. He laid the piece of his essence against the exterior of the cloud, and gently placed his other hand against the wisp, letting go of its other end. The dark magic pulsed greatly from Discord's paw as it surrounded the wisp, the energy flying outwards in undulating streams. Discord opened his paw flat, forcing his magic against the essence, which only discharged the dark energy with even greater ferocity. But Discord did not relent—he would not accept failure! Especially not from himself! Discord pushed against the essence wisp with all the strength contained within his mighty lion arm. This auxiliary effort showed itself to be working, as now the wisp began to gradually sink into the fluffy exterior of the cloud: penetrating its billowy layers and delving deeper within the internal workings of the supernatural gaseous object.
Discord continued to drive the slice of his essence through the outermost shell of the cloud, not holding back for even the slightest second. Suddenly, Discord was taken aback by the abrupt upsurge of dark energy bursting from the spot where the wisp was. This surge grew and grew, until at last it erupted from the spot, blasting the draconequus several yards away. He tumbled across the round before coming to a stop. Discord lifted his head, shaking off the aches and pains felt all around his body. But these minor discomforts did not trouble him long, as his attention was swiftly drawn to the sounds of warped crackling.
Gushes of dark energy flared up all around the cloud; both on the surface and underneath. Small spouts of magic shot up from the cloud's exterior like a ruptured volcano, whilst simultaneously formed bulges all over the cloud's body, showing the magic kept within had just about reached its breaking point upon the acquisition of Discord's essence. As these malformations persisted, the mass of collected magic, evil, and water droplets lifted up into the air, with the magic surges gradually decreasing in size and activity. The cloud soon came to a stop, hovering a short distance above Discord's head. At the same time, the constant churning of the unstable power inside the cloud had evanesced, which put a smile(albeit a creepy one) on Discord's face.