Ravensburger clears up the intricacies of reprints and set rotation
As Lorcana continues to grow, older cards become harder to find and eventually rotate out of use. To counteract that, Fabled will be including several cards returning from the first four sets. This means that old cards in sets that have rotated out are still legal for play as long as they were reprinted in a currently legal set with the same card name and version. You can check the set a card is in by looking at the lower left corner of the card.
With four sets leaving the card pool, Ravensburger is picking a select few to return, and even stated that a large majority of Fabled will be reprinted cards to give these older cards their time in the sun.
