You lose X life and create X tapped Powerstone tokens (A Powerstone is an artifact with ": Add . This mana can't be spent to cast a nonartifact spell."). Then all creatures get -1/-1 until end of turn for each artifact you control.
The information presented on this site about Magic: The Gathering, both literal and graphical, is copyrighted by Wizards of the Coast.
This website is not produced, endorsed, supported, or affiliated with Wizards of the Coast.