You can also use proliferate cards like Experimental Augury and Tezzeret's Gambit to stack experience even faster
Building in artifact removal is what makes this just about playable in my eyes, as Im sure thatll be more valuable than we realize, particularly with so many artifact creatures roaming about the set
Unlike Evolving Wilds and other variants though, Ash Barrens can be played and tapped for mana immediately, so it's not as slow as some of the alternatives
Castle Vantress Land Castle Vantress enters the battlefield tapped unless you control an Island
The Pokmon card Venusaur 3/108 of Dark Explorers also exists in Reverse version
I think part of it is TCGPlayer factoring in availability, I know Radiant Greninja is available in two sealed products (the Origin Forme Palkia VSTAR League Battle Deck and the Quaquaval ex Deluxe Battle Deck) and Astral Radiance packs while the version of Radiant Charizard reprinted in the Prize Packs is only available in Crown Zenith