Looks really fun! Movement sounds like an interesting twist, although it looks like it's hard to incorporate it into the game. I don't see any HP on the cards themselves, can the cards attack each other?
They can! Like many CCG, I'm going to use the system that the cards are "defending" the player and have to be eliminated to get at the player(though this will be based on board control, ie. if you can pass by the cards on the middle of the board, you can attack the player even if they still have units alive). Currently trying to balance the HP and attack values of each card.