Take into Custody {U}
Instant
Tap target creature. It doesn't untap during its controller's next untap step.
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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.
Queen of Ice // Rage of Winter 100%
$0.08#12986
"Tap target creature. It doesn't untap during its controller's next untap step."
Rush of Ice 100%
$0.09#22254
"Tap target creature. It doesn't untap during its controller's next untap step."
Grip of the Roil 100%
$0.08#23728
"Tap target creature. It doesn't untap during its controller's next untap step."
Rooftop Nuisance 100%
$0.09#22530
"Tap target creature. It doesn't untap during its controller's next untap step."
Sleep of the Dead 100%
$0.22#21298
"Tap target creature. It doesn't untap during its controller's next untap step."
Press for Answers 100%
$0.07#19782
"Tap target creature. It doesn't untap during its controller's next untap step."
Crippling Chill 100%
$0.11#19395
"Tap target creature. It doesn't untap during its controller's next untap step."
Chill of the Grave 100%
$0.11#18808
"Tap target creature. It doesn't untap during its controller's next untap step."
Ojutai's Breath 100%
$0.08#21730
"Tap target creature. It doesn't untap during its controller's next untap step."
Glacial Grasp 100%
$0.15#18643
"Tap target creature. Its controller mills two cards. That creature doesn't untap during its controller's next untap step."
Sonic Assault 100%
$0.04#22715
"Tap target creature. this card deals 2 damage to that creature's controller."
Deadshot 100%
#29124
"Tap target creature. It deals damage equal to its power to another target creature."
Vantress Transmuter // Croaking Curse 99%
$0.15#16458
"Tap target creature. Create a Cursed Role token attached to it."
Telekinesis 99%
#28661
"Tap target creature. Prevent all combat damage that would be dealt by that creature this turn. It doesn't untap during its controller's next two untap steps."