It has a type, it's a creature. It just doesn't have any subtypes like human or wizard or something. Note also that there is at least one printed card which, due to oracle errata, is a Creature with no subtype - Nameless Race.
Pic related plus a regular noncreature artifact can also make a permanent with no type - it won't be an artifact or a creature and it'll just sit on the battlefield as nothing
>the best art gets the worst abilities
Why
They sell the same issues, words, pictures, but with different cover art.
707.2a. If a face-up permanent is turned face down by a spell or ability, it becomes a 2/2 face-down creature with no text, no name, no subtypes, and no mana cost. A permanent that enters the battlefield face down that wasn't cast as a face-down spell also has these characteristics. These values are the copiable values of that object's characteristics.
>711.9. If an effect allows a player to cast a double-faced card as a face-down creature spell, or if a double-faced card enters the battlefield face down, it will have the characteristics given to it by the rule or effect that caused it to be face down. That card remains hidden, using either a face-down checklist card or opaque sleeves. See rule 707, "Face-Down Spells and Permanents."
>711.9a. While face down, a double-faced permanent can't transform. If it is turned face up, it will have its front face up.
>712.10. Meld cards on the battlefield and melded permanents can't be turned face down. If a spell or ability tries to turn such a permanent face down, nothing happens.