I added cards grouped by class and sorted by evolution order as I think this is a lot more useful than showing all cards in alphabetic order. However this creates some redundancy. I would remove the original card list, however it also removes the table, which some readers might find useful. If anyone knows how to create the table without showing the cards themselves, feel free to improve what I did.
Alternatively, it may make sense to have a different page altogether for Spellstones as cards (not art)?
Finally I managed to figure it out. Also, a separate page wouldn't make much sense, as Spellstones are already listed on the page dedicated to the Kobolds and Catacombs set, as well as the Upgradable page (although sadly not in the evolution order).