Spellbinder {3}
Artifact — Equipment
Imprint — When this Equipment enters, you may exile an instant card from your hand.
Whenever equipped creature deals combat damage to a player, you may copy the exiled card. If you do, you may cast the copy without paying its mana cost.
Equip {4}
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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.
Bloodforged Battle-Axe 82%
$2.36#1697
"Whenever equipped creature deals combat damage to a player, create a token that's a copy of this Equipment."
+1 more matching line
Impostor Syndrome 81%
$7.69#3574
"Whenever a nontoken creature you control deals combat damage to a player, create a token that's a copy of it, except it isn't legendary."
Illusionist's Bracers 81%
$5.85#1592
"Whenever an ability of equipped creature is activated, if it isn't a mana ability, copy that ability. You may choose new targets for the copy."
+1 more matching line
Dream-Thief's Bandana 81%
$1.71#6238
"Whenever equipped creature deals combat damage to a player, look at the top card of their library, then exile it face down. For as long as it remains exiled, you may play it, and mana of any type can be spent to cast that spell."
Fiend of the Shadows 80%
$0.29#16842
"Whenever this creature deals combat damage to a player, that player exiles a card from their hand. You may play that card for as long as it remains exiled."
Assimilation Aegis 80%
$0.41#9897
"Whenever this Equipment becomes attached to a creature, for as long as this Equipment remains attached to it, that creature becomes a copy of a creature card exiled with this Equipment."
+1 more matching line