7 cards where the name includes “.ownf”

Bitter Downfall (The Lord of the Rings: Tales of Middle-earth #77)
Down for Repairs (Unfinity #73)
Drakestown Forgotten (Vintage Masters #117)
Epic Downfall (Throne of Eldraine #85)
Hero's Downfall (Dominaria United Commander #112)
Mercadia's Downfall (Mercadian Masques #205)
Overgrown Farmland (Innistrad: Midnight Hunt #265)

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