It's free
You could play Vintage or Vintage Cube on Magic Online, for a cheaper way to try this monstrous format
There are certainly going to be a few more gems-heck, the entire rest of the set might be amazing, for all we know-but chances are, WotC picked the best eighteen rares in the set to use as Ultimate Box Toppers
Multi-Prize Pokmon Management: Cards like V, VMAX, and EX Pokmon give up multiple Prize Cards when knocked out, so managing risk is crucial
Its art and phyrexian mana add to this effect, and it makes for a somewhat intimidating card that you cant help but desire to tap into
Grades like GD+ work in an analogous way, however it usually only makes sense between Near Mint and Excellent, as nobody really cares if a card is LP+ or LP-