This is certainly a possibility, but theres no way to know for sure
Like most Magic: The Gathering cards, the value of Popular Entertainer depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Commander Legends: Battle for Baldur's Gate)
Open your boosters and find out Each booster pack contains one of 121 possible card lists so there are over 14 000 possible 40-card decks
A big, beefy body (9/9) with three notable keywords (vigilance, reach, trample) that allows you untap all lands you control when it enters if cast plus three strong activated abilities means youll always be happy to throw this fatty down especially if you can cast it early via ramp
Youre really only going to want to bring it in against decks with artifacts and enchantments worth targeting, though
Transmute is about trading card utility, upgrading one card for a card more fine-tuned for your needs