I believe the actual reason behind them is the following
Something that also worked in Pokmons favor was that their last two sets, Twilight Masquerade and Stellar Crown, both had been fairly popular sets after the first five sets of the Scarlet & Violet era cards had been priced and sold much lower than MSRP and were usually close to distribution cost for stores at launch
It would be really nice if Etali, Primal Storm had some kind of keyword with it to give it a little more power
The Lord of the Rings: Tales of Middle-earth Variants Foil: Sauron, the Dark Lord (0675 - Scroll Showcase - Silver Foil) NM EX VG G Other Versions Customers who purchased The Lord of the Rings: Tales of Middle-earth Variants : Sauron, the Dark Lord (0675 - Scroll Showcase - Silver Foil) also bought
Lets just say he wasnt best pleased when Bolt Bend resolved
Use it for CCGs, TCGs, living card games, expandable card games, prototype card games, or even educational flashcard projects