Maelstrom Portal is a rare Shaman spell card that belongs to the "One Night in Karazhan" set, which was released on 11.08.2016 and is one of initially 45 cards. The artist of this card was Daria Tuzova, who also made 16 other artworks for Hearthstone.
The flavor text of the card is the following: They bill this as a popular resort attraction, but they try and get your money up front.
The card is easy to memorize with 95.96% of correct quiz questions.
