Simon loses. Not because he plays poorly, but because the Winter King cheats. He uses an "illegal spell card" called (a meta-joke about the original series) to freeze the board state, allowing his Snow Golem to land a final blow.
Due to the Fionna and Cake hype, Cryptozoic announced a new expansion set in late 2024 (as of this writing) called "The Fionna & Cake Multiverse Booster Pack." This set includes: adventure time fionna and cake card wars
For fans of real-world tabletop gaming, the Adventure Time Card Wars Collector's Pack: Fionna vs. Cake was a major release by . This set functions both as a standalone two-player game and an expansion that can be mixed with other Card Wars packs. Simon loses