Serra Bestiary {W}{W}
Enchantment — Aura
Enchant creature
At the beginning of your upkeep, sacrifice this Aura unless you pay {W}{W}.
Enchanted creature can't attack or block, and its activated abilities with {T} in their costs can't be activated.
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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.
Arachnus Web 99%
$0.18#13722
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
+1 more matching line
Prison Term 99%
$0.38#13035
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
+1 more matching line
Lawmage's Binding 99%
$0.16#16014
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
+1 more matching line
One Thousand Lashes 99%
$0.11#19817
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
+1 more matching line
Ice Cage 99%
$0.08#24085
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
Desert's Hold 99%
$0.17#20880
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
Arrest 99%
$0.24#11361
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
Prison Sentence 99%
$0.20#17204
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
Krasis Incubation 99%
$0.08#25710
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
Trapped in the Tower 99%
$0.11#18727
"Enchanted creature can't attack or block, and its activated abilities can't be activated."
Lost in Thought 99%
$0.17#27827
"Enchanted creature can't attack or block, and its activated abilities can't be activated. Its controller may exile three cards from their graveyard for that player to ignore this effect until end of turn."
+1 more matching line
Volrath's Curse 98%
#24912
"Enchanted creature can't attack or block, and its activated abilities can't be activated. That creature's controller may sacrifice a permanent of their choice for that player to ignore this effect until end of turn."
Heliod's Punishment 97%
$0.20#14831
"Enchanted creature can't attack or block. It loses all abilities and has "{T}: Remove a task counter from this card. Then if it has no task counters on it, destroy this card.""
+1 more matching line
Hold for Ransom 97%
$0.13#19115
"Enchanted creature can't attack or block and has "{7}: this card's controller sacrifices it and draws a card. Activate only as a sorcery.""
Cowed by Wisdom 97%
$0.18#22095
"Enchanted creature can't attack or block unless its controller pays {1} for each card in your hand."
+1 more matching line
Oppressive Rays 92%
$0.12#15869
"Enchanted creature can't attack or block unless its controller pays {3}."
+1 more matching line