Deck building is the process of creating a customized set of cards for use in various card games, such as Magic: The Gathering or Hearthstone. Players select cards that complement each other and fit a specific strategy, allowing for unique gameplay experiences. The goal is to construct a deck that maximizes synergy and effectiveness against opponents. In deck building, players often consider factors like card types, mana costs, and abilities. Balancing offensive and defensive cards is crucial, as well as ensuring a good mix of resources. This strategic planning enhances the overall enjoyment and competitiveness of the game.