Ghostly Touch {1}{U}
Enchantment — Aura
Enchant creature
Enchanted creature has "Whenever this creature attacks, you may tap or untap target permanent."
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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.
Curse of Inertia 92%
$0.40#14928
"Whenever a player attacks enchanted player with one or more creatures, that attacking player may tap or untap target permanent of their choice."
Merrow Reejerey 82%
$0.24#3998
"Whenever you cast a Merfolk spell, you may tap or untap target permanent."
Coral Trickster 82%
$0.16#22227
"When this creature is turned face up, you may tap or untap target permanent."