My Cards Can Be Redeemed in the Sui and Tang Dynasties

I woke up in the fourth year of Renshou and discovered, to my dismay, that I had become the disgraced Crown Prince of the Sui Dynasty. Yang Guang had murdered his father to seize the throne, then forged an imperial edict and had me strangled. Luckily, I awakened a Card Exchange System, and now I can claim any of the countless cards for myself.

Yuwen Chengdu: "I am the greatest warrior under heaven. I want you dead. Who can save you?"

Yang Yong: "I've got a whole bunch of people who can kill you. Hold on while I find them."

Li Shimin: "I've got my brother Li Yuanba. He can take on two hundred thousand men alone. How can you possibly fight me?"

Yang Yong: "That's a bit tricky. Give me a moment while I find a few more. ** Oh!"

Luo Yi: "I've got the Eighteen Riders of Yan and Yun."

Yang Yong: "Then I'll send out the Thirteen Nameless. Take that!"

Yang Guang: "..."

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.