If I hit a stretch goal that includes a card token, it will be included at all levels, (which are most of the reward levels.) If I hit a goal for a novelty token, I will add a new reward level and a new add-on feature. If I hit the uncut sheet goal I will add a new reward level and add-on feature.
If you missed it in the add-on section. Just increase your reward by $1 for every single you want (plus international shipping if that applies) and at the end of the campaign Backerkit will make it super easy for you to pick out everything you want. Kickstarter doesn't have a built in system to handles these things yet. I'm taking care of that on the backend for you guys!
If you really want one of those. I suggest pledging at the Ooze Token level and once those rewards are unlocked you can either add them on or switch to the new reward levels I can open up. Or make more noise for those rewards to be unlocked sooner.
Don't see the answer to your question? Ask the project creator directly.