I just though of something this week, what if what happened to the original Cards was something completely natural? Like, Sakura captured and converted and now the time has arrived for her to create her own cards. It would explain why the only energy felt in the cards is her own and it would explain why they’re so similar to the original ones, (she was attached) the new ones are just slightly more violent(looks at Gale) and why some seem designed with specif people in mind (Record and Tomoyo).

I’m really into this concept that magic can evolve, in the same way that animals, plants, language, and culture can evolve. It has to adapt to the fitness of its environment (or in this case, adapt to the one using the magic), becoming more suited to its wielder, but knowing that it can change again when it needs to. Synchronized but not dependent.