Frenopolis (original OP image) handles card effect assignment via the relationship between the physical game board and the color pie.

See these posts which describe the relationship between Chess and Frenopolis (in terms of number of squares and square colors):
>>96450892
>>96451669

After you see the relationship between a chess board and a Frenopolis board, you can strictly define the color pie in terms of board movements (like chess pieces):
>>96450656
>>96450886

Picrel is what I physically used to do effect assignment in Frenopolis. Because the color pie is defined in relationship to the board, every single board movement was serialized, printed out, and then distributed once to each of the card types.

The card images and effects are printed, cut, and stuck to a board with poster puddy.

Being able to view it all at once in your hand helps a lot for assigning the best fitting effects to card images.

Then you just have to pair card names with effect serial numbers in a spread sheet.

This is also how the images were assigned their color.