As a holofoil card, Greninja GX looks pretty snazzy with the distinctive foiling process the Pokemon Trading Card Game uses
Put the rest on the bottom of your library in a random order. Thats a lot of text, but basically: if you play a card that costs seven mana, you get to look at the top seven cards of your deck, and then cast a spell from among those cards that costs seven mana or less for free
The reward for this is a 2200 beatstick that can ram into something stronger without taking damage, only to replace itself with Mirage Knight
Seht's Tiger [Cat]: One great way to save yourself from a board wipe if you have the mana available
Several factors influence Sword & Shield card values: card condition (mint cards worth 3-5x more), rarity (holographic and rare cards command higher prices), first edition status, PSA/BGS grading scores, and market demand for specific Pokemon