Seized from Slumber {4}{W}
Instant
This spell costs {3} less to cast if it targets a tapped creature.
Destroy target creature.
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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.
Ajani's Response 100%
$0.15#19712
"This spell costs {3} less to cast if it targets a tapped creature."
+1 more matching line
Quicksand Whirlpool 100%
$0.05#21282
"This spell costs {3} less to cast if it targets a tapped creature."
+1 more matching line
Luminous Rebuke 100%
$0.15#10659
"This spell costs {3} less to cast if it targets a tapped creature."
+1 more matching line
Grounded for Life 100%
$0.14#19982
"This spell costs {3} less to cast if it targets a tapped creature."
+1 more matching line
Banish from Edoras 94%
$0.11#18818
"This spell costs {2} less to cast if it targets a tapped creature."
+1 more matching line
Fantastic Bounce 94%
$0.30#27665
"This spell costs {2} less to cast if it targets a tapped creature."
Hawkeye's Shot 94%
$0.69#30638
"This spell costs {2} less to cast if it targets a tapped creature."
+1 more matching line
Fate of the Sun-Cryst 94%
$0.10#14691
"This spell costs {2} less to cast if it targets a tapped creature."
Bitter Downfall 83%
$0.12#10623
"This spell costs {3} less to cast if it targets a creature that was dealt damage this turn."
+1 more matching line
Mascot Interception 82%
$0.20#22414
"This spell costs {3} less to cast if it targets a creature token."