Cowed by Wisdom 
Enchantment — Aura
$0.17 #21963 0.44 21.3 years
Enchant creature
Enchanted creature can't attack or block unless its controller pays 
for each card in your hand.
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Cards similar to Cowed by Wisdom 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 Rays94%
$0.08↓#15964↑0.26↓12.3 years↓
"Enchanted creature can't attack or block unless its controller pays 
."
."
Brainwash90%
$0.12↓#221490.68↑32.1 years↑
"Enchanted creature can't attack unless its controller pays ."
."+1 more matching line
Archangel of Tithes80%
$4.72↑#2195↑0.77↑11.1 years↓
"As long as this creature is attacking, creatures can't block unless their controller pays for each of those creatures."
for each of those creatures."
Whipgrass Entangler80%
$0.14↓#251510.07↓23.6 years↑
": Until end of turn, target creature gains "This creature can't attack or block unless its controller pays for each Cleric on the battlefield.""
: Until end of turn, target creature gains "This creature can't attack or block unless its controller pays for each Cleric on the battlefield.""
Awesome Presence79%
$0.17#187840.4230.2 years↑
"Enchanted creature can't be blocked unless defending player pays for each creature they control that's blocking it."
for each creature they control that's blocking it."+1 more matching line
Ghostly Prison79%
$5.30↑#162↑1.07↑21.9 years
"Creatures can't attack you unless their controller pays 
for each creature they control that's attacking you."
for each creature they control that's attacking you."
Kagemaro's Clutch78%
$0.21↑#30432↓0.00↓21.3 years
"Enchant creature"
Collective Restraint76%
$14.25↑#6765↑1.10↑25.9 years↑
"Creatures can't attack you unless their controller pays 
for each creature they control that's attacking you, where X is the number of basic land types among lands you control."
for each creature they control that's attacking you, where X is the number of basic land types among lands you control."
Stasis Field76%
$0.22↑#13414↑0.27↓3.4 years↓
"Enchant creature"
War Tax74%
$2.80↑#15652↑0.29↓26.9 years↑
"
: This turn, creatures can't attack unless their controller pays for each attacking creature they control."
: This turn, creatures can't attack unless their controller pays for each attacking creature they control."
Propaganda74%
$2.51↑#114↑1.12↑28.9 years↑
"Creatures can't attack you unless their controller pays for each creature they control that's attacking you."
for each creature they control that's attacking you."
Deep Freeze74%
$0.20↑#180390.538.4 years↓
"Enchant creature"
War Cadence72%
$0.89↑#11997↑0.25↓26.9 years↑
"
: This turn, creatures can't block unless their controller pays for each blocking creature they control."
: This turn, creatures can't block unless their controller pays for each blocking creature they control."
Sphere of Safety72%
$3.81↑#672↑1.17↑13.9 years↓
"Creatures can't attack you or planeswalkers you control unless their controller pays for each of those creatures, where X is the number of enchantments you control."
for each of those creatures, where X is the number of enchantments you control."
Koskun Falls72%
$17.92↑#10673↑0.62↑30.9 years↑
"Creatures can't attack you unless their controller pays for each creature they control that's attacking you."
for each creature they control that's attacking you."
Windborn Muse72%
$0.48↑#999↑0.87↑23.6 years↑
"Creatures can't attack you unless their controller pays for each creature they control that's attacking you."
for each creature they control that's attacking you."
Detained by Legionnaires72%
$0.12↓#177040.55↑2.2 years↓
"Enchanted creature can't attack or block."
+1 more matching line
Luminous Bonds72%
$0.04↓#189930.31↓8.6 years↓
"Enchanted creature can't attack or block."
+1 more matching line
Uneasy Alliance72%
$0.11↓#187130.00↓0.5 years↓
"Enchanted creature can't attack or block."
Recumbent Bliss71%
$0.12↓#194570.27↓18.1 years↓
"Enchanted creature can't attack or block."
+1 more matching line