Thank you! These are some really good points indeed, for when we want the monsters to go back especially for instance, we need to still see the board to decide what to do.. and the tutorial and art style definitely need a complete rework. The piercing allows you to attack a creature while ignoring 1 or more defense (for example, if he has 2 physical def and 2 hp, and you attack with a physical attack with 3 damage, he will have 1hp left, while with 1 point of hysical piercing, he will be dead). But in fact it is only usefull at start, when creature have low HP: If a creature has 3 physical def and 1 hp, and can still kill him with a physical attack with only 1 damage and 1 piercing. However it becomes useless once you have way more damages than the creatures defense..