8 cards where the card is tagged “relentless”

Dragon's Approach (Strixhaven: School of Mages #97)
Nazgûl (The Lord of the Rings: Tales of Middle-earth #100)
Persistent Petitioners (Ravnica Remastered #53)
Rat Colony (Dominaria #101)
Relentless Rats (Masters 25 #105)
Seven Dwarves (Throne of Eldraine #141)
Shadowborn Apostle (Double Masters 2022 #89)
Slime Against Humanity (Murders at Karlov Manor #177)

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