Your search for "Stone Retrieval Unit 248" revealed the following:
Stone Retrieval Unit (BRO) from The Brothers' War, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Andreas Zafiratos Card Text:When Stone Retrieval Unit enters the battlefield, create a tapped Powerstone token. (It's an artifact with "T: Add C....
Stone Retrieval Unit (Foil) (BRO) from The Brothers' War, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Andreas Zafiratos Card Text:When Stone Retrieval Unit enters the battlefield, create a tapped Powerstone token. (It's an artifact with "T: Add...