Creatures you control are artifacts in addition to their other types. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.
Whenever you cast an artifact spell, you lose 1 life and create a 2/2 black Necron Warrior artifact creature token.
Near Mint - $4.500
Lightly Played - $3.600
Moderately Played - $3.200
Heavily Played - $2.700
Damaged - $2.300
Near Mint Spanish - $4.500
Lightly Played Spanish - $3.600
Moderately Played Spanish - $3.200
Heavily Played Spanish - $2.700
Damaged Spanish - $2.300