I Am a God in a Thriller Game Fanfic (Including Self-Designed)

The painter Li Bai, whose painting skills are so unreliable that no one has greeted him all year round, suddenly enters the game. Accidentally obtained the ability of "Magic Pen Ma Liang" and showed off his skills! ——But I didn't expect that because the painting was too crude, it would not play a key role at all. How will Li Bai, who knows the plot in advance, show off his talents? Please wait and see—— Intention: None