22 cards where the illustration contains “fighting-stance”

Bloodfire Enforcers (Fate Reforged #93)
Body Dropper (Streets of New Capenna #168)
Branded Brawlers (Prophecy #84)
Celebrity Fencer (Streets of New Capenna #7)
Dapper Shieldmate (Streets of New Capenna #9)
Deadeye Brawler (Rivals of Ixalan #155)
Disciplined Duelist (Streets of New Capenna #182)
Gauntlets of Light (Core Set 2020 #17)
Gideon, Champion of Justice (Gatecrash #13)
Instigator Gang // Wildblood Pack (Innistrad #149)
Instigator Gang // Wildblood Pack (Innistrad #149)
Jaxis, the Troublemaker (Streets of New Capenna #112)
Jaxis, the Troublemaker (Streets of New Capenna #461)
Jeskai Student (Khans of Tarkir #14)
Kagha, Shadow Archdruid (Commander Legends: Battle for Baldur's Gate #279)
Lavakin Brawler (Core Set 2020 #147)
Monk (Fate Reforged Tokens #1)
Oji, the Exquisite Blade (Commander Legends: Battle for Baldur's Gate #290)
Professional Face-Breaker (Streets of New Capenna #426)
Pugnacious Pugilist (Streets of New Capenna #117)
Soulfire Grand Master (Fate Reforged #27)
Ultra Magnus, Tactician // Ultra Magnus, Armored Carrier (Transformers #15)
Ultra Magnus, Tactician // Ultra Magnus, Armored Carrier (Transformers #15)
Zethi, Arcane Blademaster (Universes Within #17)

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