40 cards where the illustration contains “poison”

Aether Poisoner (Aether Revolt #51)
Ambitious Dragonborn (Commander Legends: Battle for Baldur's Gate #213)
Apothecary White (Ravnica: Clue Edition #1)
Battle of Wits (Secret Lair Drop #1446)
Bile Blight (Warhammer 40,000 Commander #195)
Bite of the Black Rose (Conspiracy #26)
Bitterblade Warrior (Amonkhet #157)
Coat with Venom (Dragons of Tarkir #91)
Deathbringer Regent (Commander 2017 #110)
Deathbringer Regent (Dragons of Tarkir Promos #96)
Death Wind (Dragons of Tarkir #95)
Elderfang Venom (Kaldheim Commander #15)
Graveyard Busybody (Unstable #34)
Green Dragon (Adventures in the Forgotten Realms #186)
Green Dragon (Adventures in the Forgotten Realms #295)
Hired Poisoner (Guilds of Ravnica #72)
Lace with Moonglove (Lorwyn #225)
Lethal Exploit (Kamigawa: Neon Dynasty #107)
Lethal Vapors (Scourge #68)
Moonglove Extract (Lorwyn #258)
Murderous Betrayal (Nemesis #61)
Murderous Cut (Khans of Tarkir #81)
Necrotic Wound (Guilds of Ravnica #79)
Noxious Dragon (Fate Reforged #77)
Palace Siege (Fate Reforged #79)
Pick Your Poison (Mystery Booster Playtest Cards 2019 #97)
Plummet (Adventures in the Forgotten Realms #199)
Poison Arrow (Portal Three Kingdoms #80)
Poison the Blade (Commander Legends: Battle for Baldur's Gate #248)
Poison the Cup (Kaldheim #103)
Scourge Servant (Mirrodin Besieged #54)
Sip of Hemlock (Theros #106)
Stingblade Assassin (Wilds of Eldraine #109)
Subcontract (Unstable #73)
Suq'Ata Assassin (Visions #69)
Taigam's Scheming (Khans of Tarkir #57)
Tajuru Blightblade (Zendikar Rising #208)
Viper's Kiss (Theros #109)
Vizier of the Scorpion (War of the Spark #111)
Wren's Run Vanquisher (Lorwyn #245)

In the blink of an eye, they strode from deep snow to the end of this search.