I have no stats or figures to prove this, but I firmly believe that Final Fantasy is a bigger part of its average fan's identity than any UB property yet announced
When Universes Beyond was first announced, Wizards of the Coast said the mechanically unique cards would be restricted from the games Standard format, which generally allows cards from the most recent sets
Cynically, its not difficult to imagine Lorcanas creators banking on this extra attention to drive excitement for its upcoming trading card game, which is due to release the first of an apparently regular set release schedule this autumn
Seeing as Summons in the actual Final Fantasy franchise only stick around for a few turns, having them represented as Sagas in Magic makes perfect sense
Disney Lorcana: Rise of the Floodborn brings new characters, different starter decks, and the origin of the floodborn glimmers