You're totally right about the clarity issues, I just updated the game and added a few little things to help with that, I already had a "jiggle" function built for the cards, so I added that to buttons on the Map screen.
Also, when you place a card next to any attackable enemies now, their border turns black and the card jiggles. (edit: Card jiggle might be causing a small bug right now, so this has been removed.)
Lastly, I did update the balance and tweak some of the card and Relic values - hopefully, your cards scale a bit better with the levels now.
There were a couple of other changes as well (you can now select a hero/starting deck at the start) and I'll throw more details in a devlog, but I wanted to address your suggestions/ideas directly too.
Thank you so much for the feedback and for playing! :D
It's all just mouse input. You should be able to click and drag cards onto the board. The arrows on the cards indicate which direction the card can attack adjacent cards.
Once you place a card next to an enemy card and if your card has an arrow directly facing an adjacent enemy, you have to click the enemy card to attack it.
Once a card is played, it is locked on the board, so you have to play a new card from your hand each turn.
You can also right click cards to see more stats, including race, type, class, die sides, and in some cases card ability (leader cards and some elite cards).
I'll be adding instructions directly in game likely later this month.
