Tiny Knight of Evil is a rare Warlock minion card that belongs to the "The Grand Tourney" set, which was released on 24.08.2015 and is one of initially 132 cards. The artist of this card was Raymond Swanland, who also made 33 other artworks for Hearthstone.
The flavor text of the card is the following: "No, no, no. I asked for a tiny JESTER of evil."
The card is on average to memorize with 80% of correct quiz questions.