Board game card UI concept exploration sheet, inspired by Exploding Kittens and modern rule-based tabletop games, black and white sketches only, professional game UI design process. Show 3 card types with 3-4 layout variations each: (1) Character Card featuring a large hero character pose, character name, specialization icons, short ability text and strong visual hierarchy, (2) Special Rule Card featuring card title, illustration area, rule description and action icons, (3) Track/Event Card featuring visible race track section, progression indicators, rule text and short description area. Focus on information architecture, readability, icon placement, text boxes, illustration zones, card borders and gameplay usability. Wireframe style, marker sketch rendering, UX-focused card template exploration, concept design presentation sheet, tabletop game interface design, monochrome, black ink, rough design sketches, layout studies, no colors, no gradients, no finished artwork, no mockups, clean white background.