52 cards where the illustration contains “powerstone”

Arbalest Engineers (The Brothers' War #206)
Argothian Opportunist (The Brothers' War #167)
Ashnod the Uncaring (The Brothers' War Commander #4)
Autonomous Assembler (The Brothers' War #34)
Bitter Reunion (The Brothers' War #127)
Brotherhood's End (The Brothers' War #335)
Captain's Call (Dominaria United #9)
Excavation Explosion (The Brothers' War #132)
Fallaji Excavation (The Brothers' War #178)
Fractured Powerstone (Planechase 2012 #111)
Geology Enthusiast (The Brothers' War #374)
Glacian, Powerstone Engineer (Commander Legends #72)
Great Desert Prospector (The Brothers' War #7)
Hall of Tagsin (The Brothers' War #263)
Horned Stoneseeker (The Brothers' War #138)
Liberator, Urza's Battlethopter (The Brothers' War #237)
March of Progress (The Brothers' War Commander #8)
Mightstone (Antiquities #55)
Mightstone's Animation (The Brothers' War #58)
Mishra, Claimed by Gix (The Brothers' War #216)
Mishra, Eminent One (The Brothers' War Commander #39)
Mishra's Command (The Brothers' War #141)
Mishra's Domination (The Brothers' War #142)
Mishra, Tamer of Mak Fawa (The Brothers' War #217)
Parallel Lives (Judge Gift Cards 2022 #3)
Planar Collapse (Urza's Legacy #18)
Powerstone (The Brothers' War Tokens #7)
Powerstone (Dominaria United Tokens #23)
Powerstone Engineer (The Brothers' War #20)
Powerstone Shard (Dominaria #227)
Rootwire Amalgam (The Brothers' War #203)
Sibling Rivalry (The Brothers' War #152)
Slagstone Refinery (The Brothers' War #243)
Splitting the Powerstone (The Brothers' War #63)
Stone Retrieval Unit (The Brothers' War #248)
Tawnos, Solemn Survivor (The Brothers' War Commander #3)
The Antiquities War (Dominaria #42)
The Brothers' War (The Brothers' War Commander #22)
The Mightstone and Weakstone (The Brothers' War #238a)
Tocasia's Welcome (The Brothers' War #30)
Urza, Chief Artificer (The Brothers' War Commander #40)
Urza, Lord Protector (The Brothers' War #225)
Urza, Planeswalker (The Brothers' War #238b)
Urza, Powerstone Prodigy (The Brothers' War #69)
Urza, Prince of Kroog (The Brothers' War #226)
Urza, Prince of Kroog (The Brothers' War #296)
Urza's Miter (Antiquities #76)
Veteran's Powerblade (The Brothers' War #41)
Visions of Phyrexia (The Brothers' War #156)
Weakstone (Antiquities #78)
Weakstone's Subjugation (The Brothers' War #72)
Worn Powerstone (Urza's Saga #318)

In the blink of an eye, they strode from deep snow to the end of this search.