If nothing references or cares about the mechanic, that makes it easier to cut, too
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
Treasure Cruise is a good tool that has to be used correctly
Etali, Primal Conqueror is one of the most powerful Gruul Commanders available, and some might argue oppressively so
For those who are interested in knowing the origin of your cards, this page is for you
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