Stuck in Summoner's Sanctum 
Enchantment — Aura
$0.16 #10813 0.47 1.2 years
Flash
Enchant artifact or creature
When this Aura enters, tap enchanted permanent.
Enchanted permanent doesn't untap during its controller's untap step and its activated abilities can't be activated.
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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.
Encrust98%
$0.04↓#21399↓0.80↑14.1 years↑
"Enchanted permanent doesn't untap during its controller's untap step and its activated abilities can't be activated."
+1 more matching line
Malfunction96%
$0.03↓#26607↓0.29↓9.9 years↑
"Enchanted permanent doesn't untap during its controller's untap step."
+2 more matching lines
Stop Cold96%
$0.17↑#15671↓0.27↓2.4 years↑
"When this Aura enters, tap enchanted permanent."
+2 more matching lines
Weakstone's Subjugation96%
$0.13↓#23713↓0.18↓3.8 years↑
"Enchanted permanent doesn't untap during its controller's untap step."
+2 more matching lines
Coma Veil94%
$0.04↓#30148↓0.15↓17.9 years↑
"Enchanted permanent doesn't untap during its controller's untap step."
+1 more matching line
Ice Over94%
$0.16#22632↓0.30↓9.6 years↑
"Enchanted permanent doesn't untap during its controller's untap step."
+1 more matching line
Numbing Dose86%
$0.08↓#28344↓0.4715.3 years↑
"Enchanted permanent doesn't untap during its controller's untap step."
+2 more matching lines
Ty Lee, Chi Blocker85%
$0.47↑#6825↑0.00↓0.8 years
"Flash"
Tamiyo's Compleation83%
$0.20↑#16147↓0.394.5 years↑
"Enchanted permanent loses all abilities and doesn't untap during its controller's untap step."
+2 more matching lines
Hold for Questioning82%
$0.24↑#21295↓0.33↓3.8 years↑
"Enchanted permanent doesn't untap during its controller's untap step and its activated abilities can't be activated."
+1 more matching line
Flood the Engine82%
$0.15↓#15772↓0.35↓1.6 years
"When this Aura enters, tap enchanted permanent."
+1 more matching line
Starlight Snare82%
$0.13↓#20413↓0.25↓1.8 years
"Enchanted creature doesn't untap during its controller's untap step."
+1 more matching line
Charmed Sleep82%
$0.07↓#15562↓0.25↓6.9 years↑
"Enchanted creature doesn't untap during its controller's untap step."
+1 more matching line
Claustrophobia82%
$0.05↓#19077↓0.36↓14.9 years↑
"Enchanted creature doesn't untap during its controller's untap step."
+1 more matching line
Sleep Paralysis82%
$0.06↓#23005↓0.88↑10.4 years↑
"Enchanted creature doesn't untap during its controller's untap step."
+1 more matching line
Paralyze82%
$0.13↓#20525↓0.5733.1 years↑
"Enchanted creature doesn't untap during its controller's untap step."
+2 more matching lines
Capture Sphere82%
$0.05↓#18702↓0.25↓7.9 years↑
"Enchanted creature doesn't untap during its controller's untap step."
+2 more matching lines
Waterknot82%
$0.12↓#21884↓0.25↓8.6 years↑
"Enchanted creature doesn't untap during its controller's untap step."
+1 more matching line
Containment Protocol82%
$0.21↑#28751↓0.00↓0.5 years
"Enchanted creature doesn't untap during its controller's untap step."
+2 more matching lines
Castaway's Despair82%
$0.09↓#26583↓0.538.9 years↑
"Enchanted creature doesn't untap during its controller's untap step."
+1 more matching line