The goal of this workshop is to initiate the creation of one or several cards decks through a series of hands-on activities, that will serve as a tool for generating visualization design fictions. Although methods exist to ideate visualization designs, they are not tailored to design fictions. And although some methods exist for generating design fictions, they are not tailored to visualization. We believe that creating a design fiction method for envisioning tomorrow’s visualizations is essential for the research community to think about speculative design. There is also considerable pedagogical value in such a cards game, and these could result in a fun and creative in-class activity for teaching visualization design.