Norin, Swift Survivalist 
Legendary Creature — Human Coward
Norin can't block.
Whenever a creature you control becomes blocked, you may exile it. You may play that card from exile this turn.
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Cards that do something similar 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.
Fear of Abduction 84%
$0.17#18111
"As an additional cost to cast this spell, exile a creature you control."
Necrotic Fumes 84%
$0.16#24317
"As an additional cost to cast this spell, exile a creature you control."
Tromokratis 91%
$0.22#4862
"this card can't be blocked unless all creatures defending player controls block it."