Pledge at the reward you are interested in and increase your pledge to do the add-on. Example: For three sets of Action Cards, pledge at ⚔ NOVICE ⚔ and add $20 to your pledge to get two additional sets.
After the kickstarter, we will use the the survey to figure out which item you want as well as the add-on.
Don't see the answer to your question? Ask the project creator directly.