Card backs can be printed slightly differently, worn in a particular way, or marked with the tiniest nick
(Set 13) Wilds Unknown (Set 12) Winterspell (Set 11) Whispers in the Well (Set 10) Fabled (Set 9) Reign of Jafar (Set 8) Reign of Jafar: Illumineer's Quest: Palace Heist Archazia's Island (Set 7) Azurite Sea (Set 6) Shimmering Skies (Set 5) Ursula's Return (Set 4) Into the Inklands (Set 3) Rise of the Floodborn (Set 2) The First Chapter (Set 1) Skip footer
Keep in mind these are anecdotal and may vary by region
This could work really well in location focused decks, giving you ample power to challenge other locations or characters and stay on top of the pace of play
The numbers generated in Step 2 are subtracted from the numbers generated in Step 1
Dreamborn characters, for example, have been altered to bring them to life in new and unusual ways, such as this Dreamborn Daisy Duck, reimagined in Azurite Sea as a pirate captain