Trading card games combine collectable cards with a strategy game.
You don't know what you'll get in a booster pack. You just start a collection and trade with other players to get the cards you want.

The best part about a trading card game is that it's always changing. You design and build your own unique decks, and each game you play is different. New expansions are released a few times a year, and each new expansion brings new ways to stupefy and defeat your opponents.