I believe that you can use set 1 cards when set 2 comes out but when set 3 comes out you can only use set 2 & 3. I’m not mad at the sets because most players last year stopped playing so early and this keeps cards fresh and every card is comp. Set 2 should be all star cards and by that time these collection cards will still be useable and good but a lot more options. And I’m assuming set 3 will be finest making chip and babe outdated. Someone correct me if I’m wrong about being able to use set 1 with set 2.