14 cards where the illustration contains “robotic-arm”

Applied Aeronautics (Unstable #168)
Arcane Laboratory (Seventh Edition #60)
Busted! (Unfinity #327)
Decoction Module (Kaladesh #205)
Fabricate (Warhammer 40,000 Commander #181)
Fabrication Module (Kaladesh #211)
Geology Enthusiast (The Brothers' War #374)
Knight of the White Orchid (Secret Lair Drop #1045)
Mirror-Style Master (March of the Machine Commander #32)
Scrap Welder (Kamigawa: Neon Dynasty #159)
Thunderwolf Cavalry (Warhammer 40,000 Commander #16)
Timeless Lotus (Dominaria United #239)
Void (Invasion #287)
Whir of Invention (Aether Revolt #49)

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