Image source: Screenshot (Steem Monsters/Splinterlands).
Screenshot was taken on 2019.11.01, 04:32 CET.
I mostly receive common cards in daily quest rewards, which are mostly already parts of the Beta Starter Set, but sometimes I receive other types of rarities, for example Rare or Epic cards. Today (2019.11.01) is also such an occasion, when I received a Rare card.
This card is currently worth about $0.06 USD, and currently has 24 503 cards in circulation.