I’ve just been updating the deck building screen. I’ve made it so that it will support any number of kinds of card, and limit the quantity of each card. Sometime later I will add some options for you to choose a maximum for each of these them when creating games.
I think the default will be 12 kinds of card in addition to the essentials, and any amount.
Will go live in about an hour unless I find bugs.
This is an example showing 24 kinds but a max of 2.