This is why early cards like Control Magic and Aladdin specified you gave cards back at the end of game
By printing your own custom Magic cards, you can save money while having access to the fun, homemade cards you need for casual card games with friends (think DIY poker cards)
This is cheating, and this sort of behavior can get you kicked out of a draft, disqualified from an event, or even banned from the DCI
Gallery and List of Powerstone Cards Arbalest Engineers Argothian Opportunist Ashnod, Flesh Mechanist Cityscape Leveler Excavation Explosion Fallaji Excavation Geology Enthusiast Gix's Caress Great Desert Prospector Hall of Tagsin Horned Stoneseeker Junkyard Genius Karn, Living Legacy Koilos Roc Mishra, Lost to Phyrexia Powerstone Engineer Repair and Recharge Sarinth Greatwurm Sibling Rivalry Slagstone Refinery Splitting the Powerstone Static Net Stern Lesson Stone Retrieval Unit Terisiare's Devastation The Brothers' War The Mana Rig Thran Spider Urza, Powerstone Prodigy Urza's Command Visions of Phyrexia Wreck Hunter Note that The Mightstone and Weakstone also has the powerstone subtype, but isn't an artifact token
The owyn, Shieldmaiden display commander is printed with the foil-etched treatment on a thicker cardstockgreat for showing off your commander but not legal in sanctioned play
Notably, ability stickers (and other granted abilities) aren't part of the rules text that get exchanged