Increasing Vengeance {R}{R}
Instant
Copy target instant or sorcery spell you control. If this spell was cast from a graveyard, copy that spell twice instead. You may choose new targets for the copies.
Flashback {3}{R}{R} (You may cast this 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.
Visions of Ruin 93%
$0.48#8420
"Flashback {8}{R}{R}. This spell costs {X} less to cast this way, where X is the greatest mana value of a commander you own on the battlefield or in the command zone."
Flare of Duplication 84%
$1.39#1123
"Copy target instant or sorcery spell. You may choose new targets for the copy."
Reverberate 84%
$2.97#1380
"Copy target instant or sorcery spell. You may choose new targets for the copy."
Twincast 84%
$6.74#6277
"Copy target instant or sorcery spell. You may choose new targets for the copy."
Refuse // Cooperate 84%
$0.14#16449
"Copy target instant or sorcery spell. You may choose new targets for the copy."