Warhammer: Phoenix Pact

At the beginning of the Horus Heresy, Fulgrim, the primarch of the Third Legion who was the first to arrive to counter the rebellion, concluded the ultimate uninterrupted plan "Pact of the Phoenix" under the Emperor's secret will. He pretended to be corrupted with the help of the piercing sword, sacrificing the entire legion to win the trust of Slaanesh, and then went deep into the realm of chaos to find a way to completely eliminate the evil god himself. Unfortunately, the power of the four gods of chaos was boundless. Fulgrim's soul was torn between loyalty and corruption, and his body was directly destroyed by Slaanesh. The demon seized the body, committed numerous crimes, killed brothers and led his troops to commit crimes, until he became a demon and transformed into a snake demon. The Emperor's Sons of the once extremely glorious Third Legion under his command all joined forces and transformed into the Noise Warrior Flawless Sword Demon. They indulged themselves in pleasure and evil in the galaxy, and became the most corrupt and determined pawn of Slaanesh... The current Empire has reached its forty-first millennium. Although Guilliman's second establishment of the army and the reconstruction of the Codex Astartes have been like a shot in the arm to revive the military fortunes, the consequences of the Great Rebellion are far from over. Human civilization, which has gradually lost the protection of the Emperor's power, is facing a powerful enemy. Surrounded by the surroundings, it is still fluttering like a candle in the wind, the galaxy is still burning, the once perfect phoenix has long since transformed into an ugly and hateful snake demon, but the contract of fate is burning the lost soul all the time, and continues to sink into the embrace of Slaanesh? Or is it the Phoenix Nirvana that cannot be destroyed or established? Big heads of Holy Terra, let us witness together