Snapcaster Mage {1}{U}
Creature — Human Wizard
Flash
When this creature enters, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. (You may cast that card from your graveyard for its flashback cost. Then exile it.)
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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.
Slickshot Lockpicker 100%
$0.19#11061
"When this creature enters, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost."
Chancellor of the Spires 88%
$0.40#13685
"When this creature enters, you may cast target instant or sorcery card from an opponent's graveyard without paying its mana cost."
Impulsivity 88%
$0.28#6414
"When this creature enters, you may cast target instant or sorcery card from a graveyard without paying its mana cost. If that spell would be put into a graveyard, exile it instead."
Scholar of the Lost Trove 85%
$0.28#10197
"When this creature enters, you may cast target instant, sorcery, or artifact card from your graveyard without paying its mana cost. If an instant or sorcery spell cast this way would be put into your graveyard, exile it instead."
Songcrafter Mage 84%
$0.21#12774
"When this creature enters, target instant or sorcery card in your graveyard gains harmonize until end of turn. Its harmonize cost is equal to its mana cost."
+1 more matching line
Aberrant Mind Sorcerer 80%
$0.23#14300
"When this creature enters, choose target instant or sorcery card in your graveyard, then roll a d20."