It changes only the total cost players pay
That almost sounds like a win-win situation, except you're the only one winning
So really, what was likely supposed to be a simple workshop tool became a fancy hat that was then wrapped up in the story as they fleshed out Urzas lore
Teana thanks Jono and Atem for the rescue, and as they travel back to the Hidden Dueling Grounds, wonders why Seto was gloating after his loss, remarking that he "seemed to have a different agenda", while Jono tells Atem to be cautious as they part ways
Zaxara, the Exemplary Zaxara, the Exemplary puts an emphasis on the green aspect of Sultai as a mana dork that produces giant tokens
The real value depends on rarity, condition, and current demand and all three shift regularly