Blood Angels - Imperium Secundus and the Trial of the Night Haunter: With the Imperium severed in two halves, isolated and ignorant of each other as a result of the raging tumult of the Ruinstorm, the light of the Astronomican was no longer visible from Ultramar and no word of the Emperor had been heard for several Terran years. Ultramarines Primarch Roboute Guilliman declared the foundation of the "Imperium Secundus" as a means of continuing the fight against the Traitors and securing the Emperor's great work.When the Blood Angels arrived at Ultramar having escaped the Signus Cluster, Guilliman proclaimed Sanguinius as the rightful heir to the Emperor. Not long after, the Dark Angels also followed the guiding beacon of the Pharos and arrived in the Five Hundred Worlds. Lion El'Jonson was declared the Lord Protector of the realm and supreme master of all its military forces, a title equivalent to that of "Warmaster". Unfortunately, the foundation of Imperium Secundus was marred when Night Lords Primarch Konrad Curze, who had been hiding within the bowels of the Dark Angels flagship, escaped from the Invincible Reason and rampaged across Macragge, intent on spreading as much terror and chaos as he could.Eventually, both Guilliman and the Lion confronted the cornered Curze. Their attempt to kill him were unsuccessful as the Night Lords Primarch had laid a cunning trap. He brought down an entire chapel upon the two Primarchs through the use of planted explosives and fled the scene. Guilliman and the Lion were only saved through the direct intervention of the Loyalist Iron Warriors Warsmith Barabas Dantioch, who was communicating with Guilliman at the time of the attack, through a portal that was opened by the Pharos. On instinct, the Warsmith reached through the portal and pulled the two Primarchs to safety on Sotha.Continuing his obsessive hunt for the elusive Night Haunter over the following two years, the Lion and Guilliman continuously clashed over policies, especially in regards to the security of Imperium Secundus, and how best to deal with rebels on Macragge, that the Lion was certain Curze had something to do with. Following a suicide bombing of an Astartes convoy, the Lion used the Ist Legion to establish martial law on Macragge.Certain that Curze was hiding within the rebellious Illyrium region, the Lion advocated the use of a massive orbital saturation bombardment of the region to ensure Curze's death. Facing resistance from both Emperor Sanguinius and Guilliman, the Lion instead, opted to deploy his Legion's Dreadwing in order to flush out Curze and the rebels. During an attack on the city of Alma Mons, the Lion finally cornered the elusive Night Lords Primarch and the two came to blows.After a brutal confrontation, the Lion eventually emerged victorious, and questioned his brother why he had turned away from the Emperor, to which Curze simply replied, "Why not?" Curze went on to explain that there was a monster in his head that he could not stop. Though he finally had Curze at his mercy, the Lion couldn't bring himself to kill his brother, and instead pummeled him again.The Lion ripped Curze's backpack from his battle-plate and lifted him over his head, and then brutally brought him down across his knee, breaking Curze's spine and paralysing him. The Lion brought the grievously wounded Curze before Sanguinius and Guilliman to stand trial.A Triumvirate was later held, where Curze defended his actions, but refused to admit his guilt. Since each of the Primarchs had been created to perform a specific function, Curze was merely acting according to his own nature, and therefore had committed no crimes. The Night Lords Primarch then further divided Guilliman and the Lion by accusing the latter of secretly ordering orbital bombardment in direct violation of Guilliman's orders.Enraged, the Lion sought to kill Curze, but was halted by the words of Sanguinius and Guilliman snatched El'Jonson's Lion Sword and broke the blade across his armoured thigh. El'Jonson was furious, but Sanguinius dismissed the Lord Protector, ending the Triumvirate. The Lion was next banished from the Imperium Secundus.Taking his leave, the Lion and the Dark Angels withdrew from Macragge only hours later. Standing in the chamber of the Tuchulcha Engine aboard the Invincible Reason, the Lion brooded over recent events, and questioned his actions over the course of the previous solar decades and many of the decisions he had come to regret.As the Dark Angels made their final preparations to depart back to Caliban, the Lion went back to the Tuchulcha Engine's chamber. He then ordered the device to teleport himself and Holguin, "Deathbringer", the voted-lieutenant of the Deathwing, back to Macragge.As Sanguinius was preparing to execute Curze for his crimes, both the Lion and his lieutenant teleported directly into the chamber and told Sanguinius to halt the execution. As troops entered the room, demanding the Lion to surrender, El'Jonson explained his reasons for the intrusion. He reasoned that Curze had the ability to see precognitive visions of potential futures, and repeated the Night Haunter's claim that his death would one day come at the hands of an Assassin sent by the Emperor.If this was true, the Lion reasoned, than it was proof that the Emperor was still alive. Sanguinius knew the Lion's explanation rang true, as he recognised that his own precognitive visions of his inevitable death at the hands of the Warmaster would also eventually come to pass. When Guilliman demanded to know what would become of Curze, the Lion knelt before his two brothers and promised that he would be Curze's gaoler.