Their creatures because theyre winning the race
Veil of Summer is maybe the most expensive in-print uncommon ever, at least in a Standard booster, and very little of that value is because of Pioneer
His main ability reads as follows: "When you play this character and whenever he quests, you may banish one of your items to draw two cards." This is a pretty good ability by itself, but, as Lorcana players like Zef Games have pointed out, it gets pretty ridiculous when combined with a card like Pawpsicles
Its Relic, just slightly different
He simply says that Magic: The Gathering is currently making a "conscious effort to prioritize having more cards with flavor text", so there's no need to worry about that particular aspect of cards going anywhere soon
Interestingly, Marshall Sutcliffes approach to Quadrant Theory in Limited is surprisingly relevant to evaluating modal cards in Commander