Planar Gate {6}
Artifact
Creature spells you cast cost {2} less to cast.
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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.
Duskwatch Recruiter // Krallenhorde Howler 95%
$0.28#5979
"Creature spells you cast cost {1} less to cast."
Conduit of Ruin 85%
$4.31#2335
"The first creature spell you cast each turn costs {2} less to cast."
Shadow in the Warp 85%
$19.36#3344
"The first creature spell you cast each turn costs {2} less to cast."