For an engaged player, booster packs are the basic unit of Magic. They're used to play Limited formats, like Booster Drafts, as well as to build a collection of cards for use in Constructed formats, like Standard.
Magic The Gathering: Outlaws of Thunder Junction Commander Deck Quick Draw
$45.99
Magic The Gathering: Outlaws of Thunder Junction Commander Deck Desert Bloom
$45.99
Magic The Gathering: Outlaws of Thunder Junction Commander Deck Most wanted
$45.99
Magic The Gathering: Outlaws of Thunder Junction Prerelease Pack
$39.99