Rarity denotes the value of a card or piece of equipment. Objects are divided into Common, Uncommon, Rare, Epic or Legendary classes. Typically, the higher the rarity of an object, the more powerful it is, and the more difficult it is to obtain.
Common cards are the most common type in the game. These cards can be obtained through most purchased packs. They are denoted by the card's name having a grey font.
Uncommon cards are the next highest rarity value after Common. These cards can be obtained by purchasing most packs. They are denoted by the card's name having a green font.
Legendary cards are the next highest rarity value after Epic and are the highest rarity in the game. Legendary cards are the most difficult to obtain, and can be obtained through Prestige, Cosmic, and Draft Packs. They are denoted by the card's name having a red font.