Tower Defense for Everyone: My Cards Evolve Without Limit

Apocalyptic survival + global disasters + tower defense + everyone transmigrates + System-driven + unlimited merging I drew the most useless white card on the server from the start, yet I can merge and evolve without limit. While everyone else is fighting tooth and nail for epic purple towers, my warehouse is already piled high with multicolored mythic cards. As the Abyssal Demon God descends at the head of a trillion-strong demonic tide, I quietly merge my cards into the ultimate map-wide cannon. The global System issues a blood-red warning: BUG player detected. Data collapse in progress...