Deal Gone Bad {3}{B}
Instant
Target creature gets -3/-3 until end of turn. Target player mills three cards. (They put the top three cards of their library into their graveyard.)
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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.
Candy Grapple 98%
$0.19#15772
"Target creature gets -3/-3 until end of turn. If this spell was bargained, that creature gets -5/-5 until end of turn instead."
Depressurize 93%
$0.14#17886
"Target creature gets -3/-0 until end of turn. Then if that creature's power is 0 or less, destroy it."