An-Zerrin Ruins {2}{R}{R}
Enchantment
As this enchantment enters, choose a creature type.
Creatures of the chosen type don't untap during their controllers' untap steps.
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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.
Arena of the Ancients 87%
#18622
"Legendary creatures don't untap during their controllers' untap steps."
Phyrexian Gremlins 87%
$1.03#29985
"You may choose not to untap this creature during your untap step."
Everglove Courier 87%
$0.09#29550
"You may choose not to untap this creature during your untap step."
Frightshroud Courier 87%
$0.15#29794
"You may choose not to untap this creature during your untap step."
Flamestick Courier 87%
$0.07#29066
"You may choose not to untap this creature during your untap step."
Ghosthelm Courier 87%
$0.20#28584
"You may choose not to untap this creature during your untap step."
Callous Oppressor 87%
$1.72#15408
"You may choose not to untap this creature during your untap step."
+1 more matching line