Aura of Silence {1}{W}{W}
Enchantment
Artifact and enchantment spells your opponents cast cost {2} more to cast.
Sacrifice this enchantment: Destroy target artifact or enchantment.
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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.
Seal of Primordium 100%
$0.19#3532
"Sacrifice this enchantment: Destroy target artifact or enchantment."
Seal of Cleansing 100%
$0.34#3207
"Sacrifice this enchantment: Destroy target artifact or enchantment."
Cindervines 88%
$0.35#6153
"{1}, Sacrifice this enchantment: Destroy target artifact or enchantment. This enchantment deals 2 damage to that permanent's controller."
+1 more matching line
Assassin's Ink 82%
$0.25#15287
"This spell costs {1} less to cast if you control an artifact and {1} less to cast if you control an enchantment."