Obscuring Aether 
Enchantment
$0.17 #11132 0.12 11.4 years
Face-down creature spells you cast cost 
less to cast.
less to cast.: Turn this enchantment face down. (It becomes a 2/2 creature.)Click a line or tag to filter
Cards similar to Obscuring Aether 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.
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"Face-down creature spells you cast cost less to cast."
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"Whenever this creature attacks, face-down spells you cast this turn cost less to cast."
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": Turn this creature face down."
: Turn this creature face down."
Panoptic Projektor84%
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"
: The next face-down creature spell you cast this turn costs less to cast."
: The next face-down creature spell you cast this turn costs less to cast."
Mischievous Quanar80%
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"
: Turn this creature face down."
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Skittish Valesk78%
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"At the beginning of your upkeep, flip a coin. If you lose the flip, turn this creature face down."
Stone Calendar70%
$14.67↑#20270↓0.48↑32.1 years↑
"Spells you cast cost less to cast."
less to cast."