Pokmon cards are sold at stores in many different formats including individual booster packs, pre-constructed decks, boxed sets including several booster packs and one or more promotional cards, booster bundles of six packs, and booster boxes of 36 packs
As your life points tick down, you can flip facedown cards representing each life point to your hand - if the card drawn has a 'trigger' effect, this can be activated immediately to shake things up
This is exactly whats happened to Key to the Archive, recently, which has found itself in some hot water
Perhaps the most important part of any card is the name
The game will let me put 3 of each in my deck (I'm not going to do this until I should legitimately have the cards)
That leaves you two options - Forest and Snow-Covered Forest