He Wrote One Word, Heaven Obeyed

A man transmigrates into a mythical world and binds a cultivation system that lets him grow stronger just by writing and painting in a temple. He thinks he's just an ordinary mortal — but every stroke he writes becomes a heavenly decree, and a pebble he tosses can crush an immortal. When a goddess fleeing from enemies stumbles into his temple, she is so awestruck that she begs to serve him. Enemy immortals come seeking revenge — he smashes them to pulp with a single seal.

Another immortal sets the mountain on fire — he pierces through him with a random bone. When the leader of a divine sect begs him for shelter and even the creator god cries out for help, the man can only say: I really am just a mortal. Please stop kneeling.