Fantasy: They Call This Immortal Venerable a Cannon Fodder Villain?

Three thousand years after transmigrating, Luo Cheng finally awakens his system—but there's a problem: he's already an Immortal Venerable at the peak of cultivation! What use is a cheat system when you've already conquered the world? Everything changes when he discovers the lottery function can plunder legendary treasures from sacred sect vaults. Suddenly, this 'useless' late-game system becomes his ticket to reshaping destiny itself. The protagonist thinks he's the hero? Let him try. That's Luo Cheng's disciple now.