Editing Thousand Sons (section)

===Heresy===
[[File:A Thousand Sons.jpg|300px|right|thumb|Welcome to Prospero Bitch!]]
Before the actual start of the [[Horus Heresy]], Magnus learned of [[Horus]]' corruption and used his powers of sorcery to warn the [[Empra]] about his oh-most-favored son's impending treachery, and that his favored son, if not stopped, was about to [[FATAL|fuck everything up]] and destroy everything the Emperor had sought to build. Unfortunately Magnus' contacting the Emperor in this fashion could not have occurred at a worse time: it caused the Webway portal and the Golden Throne which the Emperor was building to suffer a Blue Screen of Death (Windows has stopped responding. In the grim darkness of the far future there is only Windows Vista) and become damaged beyond repair, and in addition caused a massive psychic blowout across all of Terra, crippling Astropath communication and inducing psychosis-related rebellions and suicides world-wide (see Outcast Dead novel).

<s>Only slightly</s> Way too bummed that he had screwed-up the Emperor's master-plan, Magnus headed back to Prospero in order to prepare to receive the Empra's mercy (read: to be killed in a very cruel way) and sent the Sons' fleet to buy some drinks. Meanwhile, the [[Emperor]], royally pissed at Magnus for damaging the Throne and unwilling to believe his most favored son could betray him, sent the [[Space Wolves]] to arrest him. Horus, who was digging Chaos already, pulled a move worthy of [[Eldrad|Eldrad Ulthran]] in terms of dickery, and sent a fake message to [[Leman Russ]] - with orders to destroy the Thousand Sons instead. Russ had, even before receiving these orders, seemingly been preparing for a worst-case scenario with Magnus (if one takes a charitable viewpoint). When Constantin Valdor arrived at Beta-Garmon from Terra, he found that Russ had been busy arming his Legion to the absolute teeth with proscribed Dark Age tech, Phosphex and other Destroyer-grade weaponry, and Exterminatus level devices beyond that. Valdor was somewhat surprised by this, but it is inconceivable that Russ wouldn't have told him about Horus's change of orders, and so the whole thing appeared to have been on the up-and-up.

However, Leman was to have something of a bro moment despite Magnus being perhaps his least favorite sibling. Though seemingly being 100% on-board with completely wiping out the Thousand Sons and killing Magnus, he apparently either had some hidden doubts as to Horus's orders, or a last minute change of heart. So when he got into Prospero's orbit, he tried to contact Magnus via both vox channels and a Thousand Sons plant within his Legion that he had become aware of (as in a spy, not a psychic vegetable). However Magnus had put up what amounted to a physic bubble preventing outside communications via any aetheric means, and nobody was picking up the vox. After about an hour's worth of agitated pacing on Leman's part and stoic waiting on [[Constantin Valdor]]'s part, the two decided that they'd been more than chivalrous enough, and the Loyalist fleet opened fire on Prospero. Fortunately, there was basically only one city on Prospero; Tizca, and that was so well shielded that despite an Exterminatus level bombardment, the city was unscathed. The Thousand Sons of course had absolutely no idea what the fuck had just happened, and because Magnus had told them to sit tight when asked, they did so even when the initial Loyalist ground assault began. The city's human auxillia however, were not given any such instructions. As far as they could tell, their world had just been subjected to the single worst military disaster in its history, and their Astartes custodians didn't seem to care. They therefore hurried to both engage whoever was attacking them and evacuate the civilians in Tizca's outer sections. There, the confused human soldiers encountered the vanguard of the Wolves, aaannd... well, they met the fate of all mortals who tangle with Astartes. Worse in fact, as few Legions were quite so butcherous as the Space Wolves. They put up a heroic and highly effective fight, inasmuch as baseline humans could against Astartes, but they died to a man in mere minutes.

After some time getting report after report that the human auxillia and civilians were being slaughtered in droves by the Wolves, Chief Librarian [[Ahzek Ahriman]] decided to ignore his Primarch's orders and, in a show of true manliness, led the Thousand Sons and the Spireguard in a defence of the capital. Outnumbered something like five to one against not only the Wolves but the [[Adeptus Custodes]] and the [[Sisters of Silence]], the TSons managed to inflict heavy casualties to the Wolves thanks to both their innate powers and a psychic teleportation network built into Tizca. They were able to use it to precision hit-and-run ambushes upon the Wolves, and then teleport away in the resulting confusion to go do it somewhere else. This not only had the result of allowing the TSons to completely outmaneuver the Wolves, but caused the Wolves to think that there were far more enemies in far more locations than there actually were. This, combined with telepathic assaults on the Wolves' perceptions, slowed their pace considerably, and inflicted far more casualties on the VI Legion than would have otherwise been possible. After a short time wreaking merry havoc amongst the Wolves, Valdor, his Custodes, and the Sisters of Silence joined the fray. They were countered by the [[Sekhmet Terminators]] or the TSons 1st Company, and the the elite duelists of the Khenetai. They died to a man, but managed to wound Valdor slightly and kill about 500 of the Sisters. Meanwhile, the TSons also launched a desperate attack on Russ and his Varagyr Terminators. Led by Auramagma, Captain of the 8th Fellowship, the attack failed after Auramagma himself had a massive psychic fireblast reflected back at him by some innate ability of Russ. Despite these setbacks, the TSons continued to make an exceptional showing of themselves... right up until the Flesh Change once again reared its ugly head. Quite literally. With their home and people under threat of complete destruction, the TSons had been using every psychic trick in the book to gain the upper hand, and this unprecedented use of psychic energy had caused a huge Warp storm to form over Tizca. The more Warp energy the TSons used, the more powerful the storm became, which fed their power in turn. This process started a massive feedback loop which caused psychic energy to build up in Tizca like a static charge, and it eventually exploded in the Thousand Sons collective faces. Once the right amount of energy had collected, the Thousand Sons suddenly started mutating into [[Chaos Spawn|horrific Warp gribblies]] en masse without any warning. The TSons immediately realized that the Flesh Change was back with a vengeance, and this had a horrific effect not just on the TSons' numbers (and bodies), but on morale. Not only that, but even the most die-hard Warp enthusiast amongst the TSons could no longer pretend as though the Warp was not responsible for the Flesh Change. As such, many of them toned down or completely stopped using their powers in the battle. Needless to say, in a battle where their psychic powers were essentially the only thing keeping them from being overrun, losing them was an absolute catastrophe.

The defensive line was pushed back to the Pyramid of Photep, Magnus' HQ and last shelter for the civilians. Magnus finally joined the battle, unable to watch his Sons get massacred any more, and decided to challenge Leman Russ in single combat. While he put up a good fight, even breaking Russ's breastplate and piercing one of his hearts, Russ eventually beat Magnus down. Just before being hacked to pieces by the angry brother and as the Wolves started to close in on the remnant of his Legion, Magnus gave himself over to Tzeentch. He and the rest of the Thousand Sons reappeared on the Planet of the Sorcerers. Magnus swore vengeance against Russ and the other Marines who had stupidly ignored his warnings, and started plotting against the Wolves and the rest of the Imperium that betrayed him. Which is of course quite idiotic as Magnus at no point until '''AFTER''' Russ had crippled him even ''attempted'' to talk to his brother.

''Inferno'' puts a different set of events to describe the end of the Battle of Prospero. In-universe, an examination by the Adeptus Astra Telepathica reveals that only a being such as [[Tzeentch]] could have teleported anyone across the galaxy, and as always, [[Sindri Myr|power demands sacrifice]]. The writer goes on to mention that some insane scholars theorized that [[What|rather than transporting the remaining survivors of the Thousand Sons, Tzeentch only teleported Ahriman to the Planet of the Sorcerers, consuming his remaining brother Legionaries as a sacrifice to fuel the act. Every other Thousand Son after that point was a duplicate created by Tzeentch to have Ahriman cast the Rubric]]. However, this theory falls a bit flat when one realizes that, if there had been no actual Thousand Sons, there would not have been any point in casting the Rubric. Unless the entire thing was actually just done for the [[lulz]], which would be indescribably retarded but also very Tzeentchean.

After these events [[Tzeentch]] walked up and sat on his throne in the Hidden Library, at which point he conjured a [[martini]] glass full of salty tears and sipped from it. He then set it down on the arm rest, held his hands together, chuckled and muttered "[[Just As Planned]]".