32 cards where the illustration contains “fiction-reference”

Aggressive Mining (Magic 2015 #127)
Alirios, Enraptured (Theros Beyond Death #42)
Avarice Amulet (Magic 2015 #212)
Boar (Throne of Eldraine Tokens #9)
Crosis's Attendant (Invasion #300)
Diamond Pick-Axe (The Lost Caverns of Ixalan #143)
Final-Word Phantom (Murders at Karlov Manor Commander #22)
Goblin Secret Agent (Unhinged #79)
Grave Bramble (Innistrad #184)
Hostile Hostel // Creeping Inn (Innistrad: Double Feature #264)
Hostile Hostel // Creeping Inn (Innistrad: Double Feature #264)
Kappa Tech-Wrecker (Kamigawa: Neon Dynasty #198)
Kogla and Yidaro (March of the Machine #244)
Kogla and Yidaro (March of the Machine #311)
Kogla, the Titan Ape (Ikoria: Lair of Behemoths #162)
Kogla, the Titan Ape (Secret Lair Drop #1274)
Lagrella, the Magpie (Streets of New Capenna #196)
Mechtitan Core (Kamigawa: Neon Dynasty #249)
Mineshaft Spider (The Lost Caverns of Ixalan #202)
Otherworldly Escort (Murders at Karlov Manor Commander #12)
Over the Edge (The Lost Caverns of Ixalan #205)
Pathbreaker Wurm (Avacyn Restored #188)
Ravages of War (Fallout #354)
Runaway Boulder (The Lost Caverns of Ixalan #259)
Sandwurm Convergence (Amonkhet #183)
Shark Typhoon (Ikoria: Lair of Behemoths #67)
Silver-Fur Master (Kamigawa: Neon Dynasty #511)
Skeleton Archer (Core Set 2019 #118)
Soulmates (Mystery Booster Playtest Cards 2019 #84)
The First Sliver (Secret Lair Drop #1371)
Undying Evil (Dark Ascension #77)
Voracious Greatshark (Ikoria: Lair of Behemoths #320)
You Are Already Dead (Kamigawa: Neon Dynasty #129)

The orcs’ banner sends a clear message: “You've reached the end of this search.”