You know what? I've been noticing that when you get your life restored, or rest for recovering energy, it doesn't show up immediately, which should be a great feedback for the player.
This game's cool, it keeps you playing for quite a while, at least me :P. I liked the idea that every character in the game has different attacks, it makes the strategy go to a whole new level. It has lag though, sometimes I can't manage to see my characters, nor my opponent's.