In Manga: The Complete Guide, Mason Templar states that the series is not "just one of the best kids' manga in translation, it's one of the very best manga available in English, period." He praises Clamp for their creativity and shrewd business sense, in being able to create a series that "clearly has merchandising in line" and an "utterly forgettable premise" into a story that is "brimming with warmth and joy and wonder" and is "much more than the sum of its parts." The manga is cited as being cute by critics, and in some cases too cute; however, Anderson stated that "much like Magic Knight Rayearth, even a cute story will have its depth and drama." The artwork of the manga is praised for being detailed and having "beautifully drawn pictures of the Clow Cards themselves." The cards are described as having "an artful blend of magical fantasy and reality."
