I really like what you did here!
The simple color pallet actually has more benefit then you would imagine in game production.
By keeping the amount of ink needed to print sheets of this for mass production it was save alot over the lifetime of the board game's production.
Also by creating a simple but potent visual category you made very good board game art.
That's a great talent since game mechanics in physical games can not be patented, but the art assets can be copywriten.
The use of negative space is also good for the ink useage, and the iconography you have looks great too for game mechanics.
I love the dark age apocalyptic feel, and this feels "seventh seal" to me.
If only you had one with chess pieces.
Thanks for sharing