Tony M. DiTerlizzi (born September 6, 1969) is an American fantasy artist, children's book creator, and motion picture producer.In the gaming industry, he is best known for his work in the collectible card game Magic: The Gathering and on the Planescape product line for the Dungeons & Dragons role-playing game. DiTerlizzi created The Spiderwick Chronicles series with Holly Black, and was an executive producer on the 2008 film adaptation of the series.