Magnus the Red - First Battle of The Fang: During the 32nd Millennium, Magnus the Red was determined to have his revenge for the devastation of his homeworld of Prospero at the hands of his former brother-Primarch Leman Russ and his Legion. He devised a cunning plan to lure the Space Wolves into a trap in what became known as the Battle of The Fang in order to enact his final vengeance against them. Returning from exile in the Eye of Terror at various times over the centuries following the end of the Horus Heresy, the Thousand Sons left devastation in their wake. Precision strikes on Imperial worlds had continued, each aimed at retrieving some valuable piece of knowledge or sorcerous esoterica. Despite the grievous damage Russ had inflicted on them, the Thousand Sons still had the potential to launch raids into protected Imperial space, and the knowledge of that burned within the Great Wolf Harek Ironhelm until nothing else seemed important. Despite all the resources he devoted to hunting Magnus, the chase always come up short. On Pravia, on Daggaegghan, on Vreole, on Hromor the Space Wolves always found their quarry to be elusive. The Daemon Primarch left his calling cards behind on each of these worlds, taunting the Wolves who snapped at his heels. After many fruitless efforts to catch up with the Thousand Sons, Harek became obsessed, and took to searching worlds along the edge of the Eye of Terror itself. Eventually he found what he believed to be the Thousand Sons' secret base on the world of Gangava and launched a full-scale attack against it.In this he was deceived, for though Gangava was held by a strong garrison of the Forces of Chaos allied to Magnus, they were but a distraction. Even as Harek attacked Gangava, the Legion fleet of the Thousand Sons and their Chaotic levies appeared in orbit over Fenris. The bulk of the Thousand Sons were prepared to descend upon the Space Wolves' homeworld and level The Fang itself, ostensibly in retaliation for the Burning of Prospero. The real reason behind this retaliatory strike was not to simply strike at the Space Wolves out of revenge -- although most of Magnus' Legion were lead to believe this -- but to prevent the Space Wolves from successfully creating any Successor Chapters. To the Daemon Primarch, preventing the creation of new successors of Leman Russ was a goal without price, and so what remained of his Thousand Sons Legion would be sacrificed if need be to put an end to the Space Wolves' dream. The Fang was held by only a skeleton force of Space Wolves and their feudal thralls. For forty days and forty nights the Thousand Sons assaulted the mighty citadel. Bjorn the Fell-Handed, most ancient of the Space Wolves' Dreadnoughts, was awoken from his long slumber and took charge of the Chapter's defences. Under Bjorn's direction the Space Wolves fell back to the innermost chambers of The Fang, collapsing the tunnels as they went. Simultaneously, a force of Scout Marines, under Haakon Blackwing, managed to escape from the citadel and take ship to Gangava, bringing word of the siege to Harek.Overcome with fury and shame at his folly, the Great Wolf immediately took ship to Fenris, bringing the might of the Space Wolves with him. Finally, on the upper slopes of The Fang itself, the Great Wolf met Magnus in battle on the final day of the siege. The Great Wolf's violence against the Sorcerer was stoked by rage, the rage he had cultivated ever since leaving Gangava. The faces of the slain on Fenris appeared in his mind, growling in accusation. These dead had been sacrificed on the altar of his hubris, and now they demanded retribution. Ironhelm intended to deliver it. The Great Wolf pummelled the injured Daemon Primarch with his Power Fist, hitting him again, and again, smashing him against the rocks of The Fang’s flanks. Magnus cried out then, a cry of pain that had not been heard since Leman Russ had mortally wounded his first body on Prospero a thousand years before.For a moment, it looked like Magnus had lost the will to fight. He absorbed the punishment, his back arching against the cliffs. But then, he began to remember himself. Even now, even after enduring so much, having absorbed so much pain, his essential strength, the core of fire that fuelled him, remained inviolate. The Great Wolf was driven back toward the edge and beaten down to his knees. The Daemon Primarch had proved to be too powerful for him and slew Harek, but not before taking a terrible wound himself. Before dying, the Great Wolf took solace knowing that his Wolves had already penetrated The Fang. The Astartes of the Space Wolves would hunt down every invader in those halls, one by one, driven by the remorseless focus that had always been their badge of honour. The fact that they would come too late to save him was unimportant. Magnus had failed and The Fang would endure.But Magnus took some small consolation in his Legion's defeat, for ultimately, he had achieved his primary objective. Magnus the Red personally destroyed the Space Wolves' gene-laboratories within The Fang. He shattered the birthing tubes and trampled and tore apart the experimental Sons of Russ who had been freed from the genetic curse of the Wulfen. The vials of altered Space Wolves gene-seed were all destroyed, broken into glistening shards of glass and the Cogitators were consumed by flames. Irreplaceable genetic engineering equipment, some of it dating back to the days of the Unification on Terra, had been devastated beyond repair, its priceless inner mechanics now nothing more than useless wreckage. During the Daemon Primarch's rampage in The Fang's fleshchambers he was confronted by the Wolf Priest Hraldir. Though the valiant Space Wolf faced the Primarch, he proved no match for the might of one of the sons of the Emperor, and was slain. With his death, his program to create Successor Chapters of the Space Wolves could not be completed. None now lived within the Chapter who understood Hraldir’s work, and the necessary genetic alteration equipment had been utterly destroyed. After this, the Space Wolves would forever remain alone, the sole inheritors of the legacy of Leman Russ. Magnus had gained his revenge for the loss of Prospero's promise.