Once you have plenty of Trainer cards, you can then focus on saving for cards you need to complete a deck (in my case, I desperately need a Gardevoir!) or, if youre in this for the long run, save your Pack Points for rare cards you will need to complete your collection later down the line
The story is quite short, because the WRGP episode belongs to the shortest episode of Yu-Gi-Oh 5D's
Not only are they powerful in the sense that they produce more mana than they cost to play, but they are also versatile in the sense that they dont take any specific synergy or set up in virtually any deck imaginable
It is used to save actions to engage with enemies that do not automatically engage because they have the Callousness keyword, or to engage with other enemies without receiving gap attacks when an enemy is already engaged with you
Unlike some of the Eeveelution cards in this special set, Sylveon ex holds a lot of competitive weight because of its disruptive playstyle