My Demon Sect Saint, Going Crazy Is Normal

Reborn as the Demon Sect Saint Li Haoran, I activated the system that refunds damage when hit, allowing me to snatch all opportunities from the hypocritical Saintess Lin Yao and the fake destined son Jiang Chen. I ruthlessly crush the righteous sect's schemes, lead seventeen human immortals to overwhelm the celestial guest Lin Feng, devour mature demon seeds to advance, refine the Human Emperor Banner, and surge my power to the level of a supreme celestial artifact. Finally, I rule the cultivation world and become the supreme Demon Venerable.