Syr Gwyn, Hero of Ashvale {3}{R}{W}{B}
Legendary Creature — Human Knight
Vigilance, menace
Whenever an equipped creature you control attacks, you draw a card and you lose 1 life.
Equipment you control have equip Knight {0}.
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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.
Bilbo's Ring 97%
$14.93#5068
"Whenever equipped creature attacks alone, you draw a card and you lose 1 life."
+1 more matching line
Audacious Thief 88%
$0.26#9121
"Whenever this creature attacks, you draw a card and you lose 1 life."
Cecily, Haunted Mage 87%
$0.38#12041
"Whenever this card attacks, you draw a card and you lose 1 life. Then if you have eleven or more cards in your hand, you may cast an instant or sorcery spell from your hand without paying its mana cost."
Preacher of the Schism 87%
$1.19#4584
"Whenever this creature attacks while you have the most life or are tied for most life, you draw a card and you lose 1 life."
Moonglove Extractor 86%
$0.11#14704
"Whenever this creature attacks, you draw a card and lose 1 life."
Puresteel Paladin 81%
$2.67#603
"Equipment you control have equip {0} as long as you control three or more artifacts."