Kill one monster, stack one poison, and I alone will poison my way across the world!

(The rating has just been released and will increase later.)
[All-player + Unlimited growth + Invincible + Steady protagonist + Superbly satisfying]
The game has come to life, ushering in an era of universal job-changing.
Su Chen awakened the only hidden class of SSS level - Venom Mage.
In an era where others struggle to survive in dungeons and can only frantically chip away at the health of high-defense, high-HP bosses, Su Chen pondered the unique characteristics of his class.
[Feature 1: Any of your attacks will forcibly apply an undispellable poison to the target, dealing high amounts of true damage per second.]
[Feature 2: Your poison stacks can stack infinitely; the maximum stack increases by 1 for each monster killed.]
So, the art style changed.
What others see as a poisonous method: scraping, fragile, no burst damage.
In Su Chen's eyes, poison magic is: a mechanism that traps enemies, inflicts true damage, and causes endless torment!
While other geniuses are still fighting tooth and nail for a first kill.
Su Chen simply used a basic attack on the Abyss-level BOSS, then turned around, found a safe place to sit down, and began to leisurely eat his bento.
"Stop washing, you can't wash away this debuff."
"Long health bar? Then I'll torture you a little longer."
Years later, when the otherworldly evil god descended, seeing the millions of layers of inescapable poison covering his body, he broke down: "This poison system, how can it be so disgusting?!"
Su Chen helplessly shrugged: "I just used a basic attack, why did everyone go berserk?"