18 cards where the illustration contains “knuckleduster”

Bandit's Haul (Outlaws of Thunder Junction #240)
Bane Alley Blackguard (Dragon's Maze #21)
Big Spender (Alchemy: New Capenna #10)
Brass Knuckles (Streets of New Capenna #234)
Brass Knuckles (Fallout #755)
Giant Regrowth (Alchemy: New Capenna #13)
Hellhole Flailer (Return to Ravnica #167)
Hero of Iroas (Born of the Gods #17)
Jagged Poppet (Dissension #115)
Kill-Suit Cultist (Dissension #65)
Kingpin's Pet (Gatecrash #173)
Lethal Throwdown (Modern Horizons 3 #99)
Okiba-Gang Shinobi (Betrayers of Kamigawa #76)
Professional Face-Breaker (Streets of New Capenna #426)
Quick-Draw Dagger (Streets of New Capenna #243)
Tenacious Underdog (Streets of New Capenna #97)
Warrant // Warden (Ravnica Allegiance #230)
Ziatora's Envoy (Streets of New Capenna #232)

The message was clear to Sorin—time to search for something else.