Sleep Paralysis {3}{U}
Enchantment — Aura
Enchant creature
When this Aura enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's 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.
Singing Bell Strike 100%
$0.04#22497
"When this Aura enters, tap enchanted creature."
+2 more matching lines
Ringing Strike Mastery 100%
$0.15#14343
"When this Aura enters, tap enchanted creature."
+2 more matching lines
Capture Sphere 100%
$0.09#18347
"When this Aura enters, tap enchanted creature."
+2 more matching lines
Tangle Kelp 100%
$0.78#30895
"When this Aura enters, tap enchanted creature."
+2 more matching lines
Colossification 100%
$0.67#3937
"When this Aura enters, tap enchanted creature."
+1 more matching line
Containment Protocol 100%
$0.28#29119
"When this Aura enters, tap enchanted creature."
+2 more matching lines
Charmed Sleep 100%
$0.10#15232
"When this Aura enters, tap enchanted creature."
+2 more matching lines
Sleep Magic 100%
$0.15#14387
"When this Aura enters, tap enchanted creature."
+2 more matching lines
Winter's Rest 100%
$0.28#12505
"When this Aura enters, tap enchanted creature."
+2 more matching lines
Claustrophobia 100%
$0.05#18730
"When this Aura enters, tap enchanted creature."
+2 more matching lines
Starlight Snare 100%
$0.12#20167
"When this Aura enters, tap enchanted creature."
+2 more matching lines
Bitter Chill 100%
$0.25#12816
"When this Aura enters, tap enchanted creature."
+1 more matching line
Castaway's Despair 100%
$0.09#26285
"When this Aura enters, tap enchanted creature."
+1 more matching line
Runner's Bane 100%
$0.05#28830
"When this Aura enters, tap enchanted creature."
+1 more matching line
Mystic Restraints 100%
$0.08#29322
"When this Aura enters, tap enchanted creature."
+1 more matching line