Thank you for your comment. The player's creatures are on the left. That's why when you click on roll dice that side sends out balls (represents an attack). When you click on a card that has no compatible monster, it will send a ball from the card to your monsters who need energy (in this case the ball represents energy). This may be why it can be a bit confusing.
P.S.: I am aware of a bug where when the enemy asks for energy a player card (bottom cards) is selected instead of the enemy's card (top cards). I thought I patched it out but it is complicated to find a bug that occurs only because of sloppy memory managment between the different threads. (I checked the code and found nothing)
