Sleep Paralysis 
Enchantment — Aura
$0.08 #23209 0.35 10.5 years
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 similar to Sleep Paralysis 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.
Starlight Snare100%
$0.13↑#205330.93↑1.9 years↓
"When this Aura enters, tap enchanted creature."
+2 more matching lines
Paralyze100%
$0.14↑#207020.80↑33.2 years↑
"When this Aura enters, tap enchanted creature."
+2 more matching lines
Charmed Sleep100%
$0.09↑#15858↑0.307.0 years↓
"When this Aura enters, tap enchanted creature."
+2 more matching lines
Claustrophobia100%
$0.04↓#192660.3215.1 years↑
"When this Aura enters, tap enchanted creature."
+2 more matching lines
Capture Sphere100%
$0.05↓#190040.21↓8.0 years↓
"When this Aura enters, tap enchanted creature."
+2 more matching lines
Waterknot100%
$0.13↑#222110.21↓8.8 years↓
"When this Aura enters, tap enchanted creature."
+2 more matching lines
Castaway's Despair100%
$0.08#264180.21↓9.1 years↓
"When this Aura enters, tap enchanted creature."
+2 more matching lines
Containment Protocol100%
$0.22↑#28589↓0.300.6 years↓
"When this Aura enters, tap enchanted creature."
+1 more matching line
Sleep with the Fishes100%
$0.22↑#197810.00↓4.5 years↓
"Enchanted creature doesn't untap during its controller's untap step."
+1 more matching line
Sleep Magic99%
$0.21↑#14256↑0.20↓1.4 years↓
"When this Aura enters, tap enchanted creature."
+2 more matching lines
Singing Bell Strike98%
$0.04↓#231500.12↓12.1 years↑
"When this Aura enters, tap enchanted creature."
+1 more matching line
Bind the Monster98%
$0.21↑#234300.23↓5.7 years↓
"Enchanted creature doesn't untap during its controller's untap step."
+1 more matching line
Roots98%
$0.15↑#29204↓0.22↓31.1 years↑
"When this Aura enters, tap enchanted creature."
+1 more matching line
Frozen in Ice98%
$0.17↑#14306↑0.45↑0.3 years↓
"When this Aura enters, tap enchanted creature."
Dehydration98%
$0.04↓#29007↓0.47↑27.0 years↑
"Enchanted creature doesn't untap during its controller's untap step."
+1 more matching line
Paralyzing Grasp98%
$0.06↓#254940.56↑17.0 years↑
"Enchanted creature doesn't untap during its controller's untap step."
+1 more matching line
Bonds of Quicksilver98%
$0.04↓#276160.2516.1 years↑
"Enchanted creature doesn't untap during its controller's untap step."
Ringing Strike Mastery97%
$0.10↑#14361↑0.07↓1.5 years↓
"When this Aura enters, tap enchanted creature."
+2 more matching lines
Dramatic Accusation97%
$0.07↓#188780.73↑2.7 years↓
"When this Aura enters, tap enchanted creature."
+1 more matching line
Thirst97%
$0.05↓#31651↓0.3530.0 years↑
"When this Aura enters, tap enchanted creature."
+1 more matching line