Echo of Medivh is a Mage spell card (rarity: epic) that belongs to the "Goblins vs. Gnomes" set, which was released on 08.12.2014 and is one of initially 123 cards. The artist of this card was Alex Garner, who also made 16 other artworks for Hearthstone.
The card costs 4 mana and its card text reads: "Put a copy of each friendly minion into your hand."
The flavor text of the card is the following: Medivh's echo haunts Karazhan, eternally cheating at chess and Hearthstone.
Based on 104 quiz answers, the card is easy to memorize: 96% of them were correct. The question on “Name” is answered correctly most often (100%), the one on “Cost” least often (90%). An answer takes 4.9 seconds on average. In the Pixel Quiz, which shows only the shape and colour of the card, it was recognised correctly 100% of the time.