The six promo cards for Attack of the Vine are: Buzz Lightyear, Providing Cover Merlin, Envisioning the Future Boo, Energetic Child Maximus, Relentless Stallion Vixey, Expert Fisher Pocahontas, Guiding the Tribe There is a chance that certain cards hold value or even grow over time, but it's entirely dependent on whether the card sees heavy play after the launch of the set
That being said casual MTG formats like Commander now make up a majority of in-person play, and theres nothing wrong with rocking up to a casual game and dropping Discord to see how the other players react
The animations add a bit without getting in the way, and rules-wise Ive yet to hit any problems
This doesnt stabilize you as well as Beza, the Bounding Spring
Most of the time I still cast Monastery Mentor on the third turn and risk it dying because the upside of untapping with it is so huge