Warhammer 30K: Make the Imperium Great Again!

He was supposed to be someone who never existed in the history of the Imperium. The Second Primarch. The master of the Second Legion. A Lost Son, erased completely from history. When a soul from the dark age of the far future opens his eyes at the end of the Great Crusade, he sees not glory, but a galaxy doomed to fall into the abyss. Horus will rebel. Sanguinius will fall. The Emperor will take his seat upon the Golden Throne. The Imperium of Man will descend into an age of despair, ten thousand years without sunlight. But this time, a variable has appeared. There will be no miracle from the heavens, no ancient technology appearing out of nowhere. All he has is the mighty body of a Primarch and the grim knowledge in his mind of how the future will unfold. With absolute pragmatism, he reshapes the Lost Legion and maneuvers between the Emperor, Malcador, Horus, and the other Primarchs, laying his plans amid struggles for resources, battles for power, and traps of fate. He doesn't just intend to survive. Before the Horus Heresy arrives, he will tear apart the ending that was long foretold with blood and cunning. He will make the name of the Second Primarch part of the galaxy's epic once more.