So if I understand the design goals, there is no deck so the game gives you enough card for a battle (hopefully) but in three different hands forcing you to plan ahead. Am I right?
I feel that more elements should use the number of turn into account to really take advantage of the system. For example a defense is valid for 2 turns, A grenade will explode in the next turn, etc. At the moment I feel you don't really need to plan ahead. You just reacting to the enemy and if you don't have the appropriate card, well too bad.
Well done for submitting your game. 👍