One Nuclear Blast, and All I Need Is a Steamed Bun

[From the Start in a High-Martial World + Disease Mutation + Dealing with Mutation Incidents + Revenge + Nuclear-Level Self-Destruction from the Start + Brother Is a Beautiful Girl] Cheng Du's digestive system mutates into a Guixu Engine, letting him achieve E=mc² and giving him an infinite mana pool, but no skills. Luckily, he has a kill-to-draw-cards System! He joins an official organization, dealing with mutation incidents and killing mutated creatures to gain skills, all while seeking revenge on the villainous organization that drove him to detonate a nuclear blast and destroy a city. The pacing slows a little in chapters five through ten, but it's a lot of fun.