Panic 
Instant
Cast this spell only during combat before blockers are declared.
Target creature can't block this turn.
Draw a card at the beginning of the next turn's upkeep.
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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.
Blaze of Glory 100%
#24208
"Cast this spell only during combat before blockers are declared."
+1 more matching line
Gorilla War Cry 100%
#17192
"Cast this spell only during combat before blockers are declared."
+1 more matching line
Flash Foliage 99%
$0.27#19224
"Cast this spell only during combat after blockers are declared."
+1 more matching line
Aleatory 99%
$0.40#18780
"Cast this spell only during combat after blockers are declared."
+1 more matching line
Chaotic Strike 99%
$0.50#15765
"Cast this spell only during combat after blockers are declared."
+1 more matching line
Curtain of Light 99%
$0.13#21857
"Cast this spell only during combat after blockers are declared."
+2 more matching lines
Melee 94%
$0.33#28941
"Cast this spell only during combat on your turn before blockers are declared."
Coward // Killer 91%
$0.29#15112
"Target creature can't block this turn and becomes a Coward in addition to its other types until end of turn."
Illusionist's Gambit 90%
$0.44#3736
"Cast this spell only during the declare blockers step on an opponent's turn."
Berserker's Frenzy 87%
$1.45#6973
"Cast this spell only before combat or during combat before blockers are declared."
Dazzling Beauty 86%
$0.12#29055
"Cast this spell only during the declare blockers step."
+2 more matching lines