Cowed by Wisdom 
Enchantment — Aura
Enchant creature
Enchanted creature can't attack or block unless its controller pays {1} for each card in your hand.
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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.
Oppressive Rays 97%
$0.12#15869
"Enchanted creature can't attack or block unless its controller pays {3}."
+1 more matching line
Serra Bestiary 97%
#31048
"Enchanted creature can't attack or block, and its activated abilities with {T} in their costs can't be activated."
Hold for Ransom 97%
$0.13#19115
"Enchanted creature can't attack or block and has "{7}: this card's controller sacrifices it and draws a card. Activate only as a sorcery.""
Arachnus Web 96%
$0.18#13722
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
+1 more matching line
Prison Term 96%
$0.38#13035
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
+1 more matching line
Lawmage's Binding 96%
$0.16#16014
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
+1 more matching line
One Thousand Lashes 96%
$0.11#19817
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
+1 more matching line
Ice Cage 96%
$0.08#24085
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
Desert's Hold 96%
$0.17#20880
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
Arrest 96%
$0.24#11361
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
Prison Sentence 96%
$0.20#17204
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
Krasis Incubation 96%
$0.08#25710
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
Trapped in the Tower 96%
$0.11#18727
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
Heliod's Punishment 95%
$0.20#14831
"Enchanted creature can't attack or block. It loses all abilities and has "{T}: Remove a task counter from this card. Then if it has no task counters on it, destroy this card.""
+1 more matching line
Lost in Thought 94%
$0.17#27827
"Enchanted creature can't attack or block, and its activated abilities can't be activated. Its controller may exile three cards from their graveyard for that player to ignore this effect until end of turn."
+1 more matching line
Volrath's Curse 93%
#24912
"Enchanted creature can't attack or block, and its activated abilities can't be activated. That creature's controller may sacrifice a permanent of their choice for that player to ignore this effect until end of turn."