Ancient of War is a epic Druid minion card that belongs to the "Legacy" set. The artist of this card was Sean O'Daniels, who also made 8 other artworks for Hearthstone.
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.
The card is easy to memorize with 94.89% of correct quiz questions.