Actually all the modifiers are exactly the same throughout Bronze. Nothing changes until you hit Silver. So, when you borrow the cards from the guild we try to level them up to Bronze maximum for you to help you through. Keep on battling and keep asking for cards each day so you can level up.

One tip I do have. If you have a quests of a specific splinter you will always have them available when choosing your teams. If you get snipe/sneak you never know what splinters will be available.