Manacles of Decay {1}{W}
Enchantment — Aura
Enchant creature
Enchanted creature can't attack.
{B}: Enchanted creature gets -1/-1 until end of turn.
{R}: Enchanted creature can't block this turn.
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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.
Fealty to the Realm 85%
$0.24#10407
"Enchanted creature attacks each combat if able and can't attack you."
Pillar of War 81%
$0.07#30018
"As long as this creature is enchanted, it can attack as though it didn't have defender."
Godhunter Octopus 81%
$0.06#27900
"This creature can't attack unless defending player controls an enchantment or an enchanted permanent."
Instill Energy 80%
#5096
"Enchanted creature can attack as though it had haste."
+1 more matching line
Overencumbered 80%
$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."