Even within Universes Beyond, the product isnt guaranteed, and there's no reason they can't be used for future in-universes sets, either
Again, you'll have to turn to Amazon to get it as we don't have any in-stock, but check it out anyways by clicking this link: The Final Fantasy set in MTG has hit the world by storm
It's not unlikely that you'll get a bunch of Treasures to work with, making Tataru decent even in multicolor commanders like Sisay, Weatherlight CaptainSisay, Weatherlight Captain and Kraum, Ludevic's OpusKraum, Ludevic's Opus with Tymna the WeaverTymna the Weaver
Future iterations of the Special Guests program may vary in execution
Its only a matter of time until the maindeck Lifebane Zombies get replaced by Nightveil Specters for an edge in the mirror, and that is a huge benefit to Naya-style decks