Sculptures you control can't attack or block.
At the beginning of your end step, create a colorless Sculpture artifact creature token with "This creature's power and toughness are each equal to the number of Sculptures you control."
A Sculpture token will count itself, so it’ll be at least 1/1.
Once Doomed Artisan has left the battlefield, your Sculptures can attack and block.
Sculpture is a creature type, not an artifact type.