Apathy {U}
Enchantment — Aura
Enchant creature
Enchanted creature doesn't untap during its controller's untap step.
At the beginning of the upkeep of enchanted creature's controller, that player may discard a card at random. If the player does, untap that creature.
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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.
Dance of the Dead 90%
#2286
"At the beginning of the upkeep of enchanted creature's controller, that player may pay {1}{B}. If the player does, untap that creature."
+1 more matching line
Fall from Favor 88%
$0.24#14681
"Enchanted creature doesn't untap during its controller's untap step unless that player is the monarch."
+1 more matching line
Runner's Bane 88%
$0.05#28830
"Enchanted creature doesn't untap during its controller's untap step."
Mystic Restraints 88%
$0.08#29322
"Enchanted creature doesn't untap during its controller's untap step."
Sinking Feeling 88%
$0.14#27621
"Enchanted creature doesn't untap during its controller's untap step."
+1 more matching line
Mesmerizing Dose 88%
$0.26#9727
"Enchanted creature doesn't untap during its controller's untap step."
+1 more matching line
Locked in the Cemetery 88%
$0.11#24185
"Enchanted creature doesn't untap during its controller's untap step."
+1 more matching line
Eternity Snare 88%
$0.04#29065
"Enchanted creature doesn't untap during its controller's untap step."
Paralyzing Grasp 88%
$0.05#24679
"Enchanted creature doesn't untap during its controller's untap step."
Sleeping Potion 88%
$0.14#29365
"Enchanted creature doesn't untap during its controller's untap step."
Entangling Vines 88%
$0.08#28390
"Enchanted creature doesn't untap during its controller's untap step."
Sleep Magic 88%
$0.15#14387
"Enchanted creature doesn't untap during its controller's untap step."
+1 more matching line
Sleep with the Fishes 88%
$0.23#19206
"Enchanted creature doesn't untap during its controller's untap step."
Singing Bell Strike 88%
$0.04#22497
"Enchanted creature doesn't untap during its controller's untap step."
+2 more matching lines