Lurker 
Creature — Beast
$4.09 #31929 0.29 32.1 years
This creature can't be the target of spells unless it attacked or blocked this turn.
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Cards similar to Lurker expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Wall of Shadows78%
$0.16↓#21746↑0.2032.3 years
"Prevent all damage that would be dealt to this creature by creatures it's blocking."