I've released a new game where you must match the gems printed on a card to activate and play that card. It is turn based and you have a limited number of action points per turn. These action points basically determine how many gems you can select per turn to activate the cards with.
There is also harvesting which works similar to combat in that you "attack" a resource node. The cards you use for this are just the back sides of the combat cards so not only do you need to be careful about what cards are selected for combat but also whether they will be useful during harvesting. The harvested materials are used to upgrade cards and unlock new characters so that it is easier to reach higher levels (it is a dungeon tower so you go up, not down) during the next run.
https://plyoung.itch.io/tower-guild









