To use these Heavy Hitters Blitz Decks, just shuffle the cards and start playing your Flesh and Blood game. When choosing your hero, pick one that suits your play - style from the Brute, Guardian, or Warrior classes. Be aware that the crossover hybrid cards have unique abilities, so take time to understand them. As for maintenance, keep the cards in a cool, dry place. Avoid bending or creasing the cards. If the cards get dirty, gently wipe them with a soft, dry cloth. Have a great time gaming!