What is a card, and how do I acquire it?

• Card is a limited edition of collection which contains player's information and special plays which its footage, information, statistics, and authenticity are protected by the blockchain technology.
  Each card has a tier and a serial number which is non-fungible token that is securely preserved in user's account.
  
  
• Users can acquire cards through purchasing a pack or buying cards that other users have put up on the marketplace.
  Users can also engage in activities such as utilize their cards by selling it on the marketplace or using it to complete a challenge.