32 cards where the illustration contains “spinal-cord”

Avenging Arrow (Return to Ravnica #4)
Burn the Impure (Mirrodin Besieged #59)
Corpse Augur (Commander 2015 #17)
Ether Well (Mirage #65)
Face of Fear (Odyssey #134)
Fallen Angel (Legends #97)
Falter (Urza's Saga #184)
Fiendlash (Forgotten Realms Commander #31)
Gangrenous Zombies (Ice Age #127)
Grafted Exoskeleton (Scars of Mirrodin #162)
Haunting Apparition (Mirage #267)
Myrkul, Lord of Bones (Commander Legends: Battle for Baldur's Gate #287)
Polluted Delta (Khans of Tarkir #239)
Scavenger Grounds (Hour of Devastation #182)
Scurrid Colony (Strixhaven: School of Mages #142)
Skullclamp (Warhammer 40,000 Commander #248)
Skull Storm (Commander 2018 #18)
Sorin, Solemn Visitor (Khans of Tarkir #202)
Spinal Embrace (Invasion #276)
Spinal Graft (Tempest #159)
Spine of Ish Sah (Mirrodin Besieged #136)
Surgical Extraction (New Phyrexia #74)
Surgical Extraction (Double Masters 2022 #356)
Surgical Extraction (New Phyrexia Promos #74★)
Swarmyard (Time Spiral #278)
The Tyrant (Born of the Gods Hero's Path #4c)
Tomb of the Spirit Dragon (Khans of Tarkir #245)
Triarch Praetorian (Warhammer 40,000 Commander #66)
Unscythe, Killer of Kings (Alara Reborn #114)
Wand of Orcus (Forgotten Realms Commander #28)
Wand of Vertebrae (Guilds of Ravnica #242)
Xenograft (New Phyrexia #51)

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