Remixed from the excellent insert https://www.thingiverse.com/thing:5215163 from
Gamespirits
This will not accommodate sleeved Mythos cards unfortunately. I did sleeve the Loyalty, Horror and Title cards. All the small cards can be sleeved (original designer's intent), although I haven't.
Print one of everything and 7xskill cards.stl. Also included is a Bambu Studio .3mf file with everything on 2 plates (single color) and one multi-colored (4 plates) for those with that capability.