I'd also like to add that thanks to the way this game works, having more arrows does not necessarily mean your card is better, since it will become very difficult to move it back if your opponent moves it. Additionally, since your goal is to occupy gem spaces, which you cannot directly place a card on, it is very important that you're able to push a card. If a card has too many arrows, it'll be difficult to push it since you're not able to push a card that has equal or more arrow strength in the direction you're trying to push it in.