Dragon's Prophet (EU) had Steam trading card support added on July 10, 2014. There are 15 cards in the series. Because Dragon's Prophet (EU) is a Free to Play Game, cards are earned by purchasing in-game content.
These cards are ONLY available in the European version of Dragon's Prophet. Although there is a US version of the game available on Steam, that version does NOT have Steam trading cards at this time. However, anyone can purchase the EU cards from the Steam Community Market and craft the badge.