Brainwash {W}
Enchantment — Aura
Enchant creature
Enchanted creature can't attack unless its controller pays {3}.
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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.
Overencumbered 84%
$0.34#10579
"At the beginning of combat on enchanted opponent's turn, that player may pay {1} for each artifact they control. If they don't, creatures can't attack this combat."
Fealty to the Realm 82%
$0.24#10407
"Enchanted creature attacks each combat if able and can't attack you."
Vow of Flight 80%
$0.17#11484
"Enchanted creature gets +2/+2, has flying, and can't attack you or planeswalkers you control."