Gorehowl is a epic Warrior weapon card that belongs to the "Legacy" set. The artist of this card was Zoltan & Gabor, who also made 16 other artworks for Hearthstone.
The flavor text of the card is the following: Grommash Hellscream's famous axe. Somehow this ended up in Prince Malchezaar's possession. Quite the mystery!
The card is easy to memorize with 98.39% of correct quiz questions.