The deck of mushrooms was inspired by the four main groups of mushrooms; endophytic, parasitic, mycorrhizal, and saprotrophic. A mushroom from each category was chosen to follow the standard playing card system of having four suits. After creating an icon for each suit, the background color of each card was chosen to be complimentary to the primary color of the mushrooms.
The playing cards gave subtle references to mushroom culture. The jack was illustrated to be a mycologist—a person who works with/researches fungi. Illustrating a toad for the joker was inspired by mushrooms also known as toadstools.
