Ancient of War is a Druid minion card (rarity: epic) that belongs to the "Legacy" set. The artist of this card was Sean O'Daniels, who also made 7 other artworks for Hearthstone.
The card costs 7 mana, has 5 attack and 5 health, and its card text reads: "Choose One - +5 Attack; or +5 Health and Taunt."
The flavor text of the card is the following: Young Night Elves love to play "Who can get the Ancient of War to Uproot?" You lose if you get crushed to death.
Based on 146 quiz answers, the card is easy to memorize: 95% of them were correct. The question on “Card text” is answered correctly most often (100%), the one on “Cost” least often (91%). An answer takes 6.2 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.