A booster pack is a supplemental package of cards, and the main means of acquiring cards for many players.
Booster packs usually contain 12 cards:
- 8 Common (C) cards
- 3 Uncommon (U) cards
- 1 Rare (R) card
Occasionally (approximately 1 in 3 packs), one of the Common cards will be replaced with a Super Rare (SR), Ultra Rare (UR), Royal Rare (RR) orfoiled version of one of the cards in the set; See Card Rarity. Booster packs will not contain cards of Fixed (F) rarity, which can only be found in theme decks.