Controlled Instincts 
Enchantment — Aura
$0.08 #30721 0.38 17.7 years
Enchant red or green creature
Enchanted creature doesn't untap during its controller's untap step.
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Cards similar to Controlled Instincts 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.
Ray of Frost90%
$0.14↑#23944↑0.12↓5.2 years↓
"Enchanted creature doesn't untap during its controller's untap step."
Bonds of Quicksilver90%
$0.04↓#276160.25↓16.1 years↓
"Enchanted creature doesn't untap during its controller's untap step."
Frozen Solid88%
$0.08#258230.4423.4 years↑
"Enchanted creature doesn't untap during its controller's untap step."
Eternity Snare86%
$0.06↓#294010.25↓20.0 years↑
"Enchanted creature doesn't untap during its controller's untap step."
Claustrophobia86%
$0.04↓#19266↑0.3215.1 years↓
"Enchanted creature doesn't untap during its controller's untap step."
Capture Sphere86%
$0.05↓#19004↑0.21↓8.0 years↓
"Enchanted creature doesn't untap during its controller's untap step."
Sleep with the Fishes86%
$0.22↑#19781↑0.00↓4.5 years↓
"Enchanted creature doesn't untap during its controller's untap step."
Sleep Paralysis86%
$0.08#23209↑0.3510.5 years↓
"Enchanted creature doesn't untap during its controller's untap step."
Containment Protocol86%
$0.22↑#285890.300.6 years↓
"Enchanted creature doesn't untap during its controller's untap step."
Castaway's Despair86%
$0.08#264180.21↓9.1 years↓
"Enchanted creature doesn't untap during its controller's untap step."
Waterknot86%
$0.13↑#22211↑0.21↓8.8 years↓
"Enchanted creature doesn't untap during its controller's untap step."
Starlight Snare86%
$0.13↑#20533↑0.93↑1.9 years↓
"Enchanted creature doesn't untap during its controller's untap step."
Charmed Sleep86%
$0.09↑#15858↑0.307.0 years↓
"Enchanted creature doesn't untap during its controller's untap step."
Glimmerdust Nap85%
$0.13↑#302660.2919.0 years↑
"Enchanted creature doesn't untap during its controller's untap step."
Green Scarab83%
$0.27↑#260420.12↓31.4 years↑
"Enchanted creature can't be blocked by green creatures."
Bind the Monster83%
$0.21↑#23430↑0.23↓5.7 years↓
"Enchanted creature doesn't untap during its controller's untap step."
Apathy83%
$0.23↑#23395↑0.53↑29.4 years↑
"Enchanted creature doesn't untap during its controller's untap step."