16 cards where the illustration contains “halloween”

All Hallow's Eve (Legends #88)
Black Cat (Dark Ascension #54)
Brain in a Jar (Shadows over Innistrad #252)
Cauldron Familiar (Throne of Eldraine #81)
Demonic Hordes (Limited Edition Alpha #103)
Diabolic Vision (Ice Age #284)
Field Creeper (Eldritch Moon #195)
Frankenstein's Monster (The Dark #45)
Gilder Bairn (Eventide #152)
Glimmer Bairn (Modern Horizons 2 #163)
Howling Wolf (Mercadian Masques #252)
Human (Innistrad: Midnight Hunt Tokens #1)
Jack-o'-Lantern (Innistrad: Midnight Hunt #254)
Make Mischief (Eldritch Moon #135)
Noxious Ghoul (Legions #77)
Season of the Witch (The Dark #52)

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