Conduit of Ruin {6}
Creature — Eldrazi
When you cast this spell, you may search your library for a colorless creature card with mana value 7 or greater, reveal it, then shuffle and put that card on top.
The first creature spell you cast each turn costs {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.
Shadow in the Warp 100%
$19.36#3344
"The first creature spell you cast each turn costs {2} less to cast."
Serah Farron // Crystallized Serah 87%
$0.48#5828
"The first legendary creature spell you cast each turn costs {2} less to cast."
Macabre Reconstruction 84%
$0.10#14990
"This spell costs {2} less to cast if a creature card was put into your graveyard from anywhere this turn."
Nylea, Keen-Eyed 82%
$5.20#3463
"Creature spells you cast cost {1} less to cast."
+1 more matching line
Duskwatch Recruiter // Krallenhorde Howler 82%
$0.28#5979
"Creature spells you cast cost {1} less to cast."
Focus the Mind 81%
$0.24#9855
"This spell costs {2} less to cast if you've cast another spell this turn."