Inspiring Statuary {3}
Artifact
Nonartifact spells you cast have improvise. (Your artifacts can help cast those spells. Each artifact you tap after you're done activating mana abilities pays for {1}.)
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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.
The Fifteenth Doctor 91%
$35.03#15387
"The first nonartifact spell you cast each turn has improvise."
Ethersworn Canonist 84%
$6.00#2787
"Each player who has cast a nonartifact spell this turn can't cast additional nonartifact spells."