Gran-Gran {U}
Legendary Creature — Human Peasant Ally
Whenever Gran-Gran becomes tapped, draw a card, then discard a card.
Noncreature spells you cast cost {1} less to cast as long as there are three or more Lesson cards in your 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.
Silvergill Peddler 87%
$0.10#19039
"Whenever this creature becomes tapped, draw a card, then discard a card."
Mechan Navigator 87%
$0.18#15257
"Whenever this creature becomes tapped, draw a card, then discard a card."
Rewrite History 85%
$0.15#22874
"Whenever one or more creatures you control become tapped, draw a card, then discard a card and put a plan counter on this enchantment."
Serpent of the Pass 82%
$0.11#15547
"If there are three or more Lesson cards in your graveyard, you may cast this spell as though it had flash."