The End of the World: I Made Zombies into Cards

On the third day of the apocalypse, his uncle locked Wang Nian underground in the shopping mall and used him to lure away the corpses. Everyone thought he was dead, but he sealed the zombie rat that rushed towards him as the first card in his life. Before the disaster, Wang Nian was a numerical planner for card games. After the disaster, he awakened rule-level abilities [card domain]: monsters, equipment, skills, and even venues can be sealed into physical cards. While others rely on superpowers to fight head-on, he relies on his numerical brain to see through hidden formulas, and uses low-level cards to synthesize high-level decks to break the game. From the corpse rat card to the safe house, from surviving alone to forming a doomsday deck, he searches for his missing sister while fighting against the card council that attempts to monopolize the power to block cards. In this doomsday, others just want to survive; but Wang Nian wants to build the entire world into his own deck.