Hello Dragnmoon,
It looks like unfortunately the 4 package shipping method was the cheapest option for your particular arrangement of products. Products such as the spell cards are large, heavy, and unfortunately don't count as "bound printed material" like books are that often helps us combine books into larger boxes for cheaper shipping.
It appears that there was an option to put all the items in one box, but this would have increased the shipping by about $5, so the system defaulted to the more-package, less-money option.
Hopefully this makes sense and you were able to receive the multiple packages. I understand this is often not ideal in a lot of situations. If you have any ongoing questions or concerns, please let us know. Thank you!