Don't Make a Sound {1}{U}
Instant
Counter target spell unless its controller pays {2}. If they do, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)
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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.
Divert Disaster 99%
$0.20#7831
"Counter target spell unless its controller pays {2}. If they do, you create a Lander token."
Spell Contortion 98%
$0.16#24408
"Counter target spell unless its controller pays {2}. Draw a card for each time this card was kicked."
Dazzling Denial 98%
$0.22#4118
"Counter target spell unless its controller pays {2}. If you control a Bird, counter that spell unless its controller pays {4} instead."
Dispelling Exhale 98%
$0.19#9129
"Counter target spell unless its controller pays {2}. If a Dragon was beheld, counter that spell unless its controller pays {4} instead."
We Say Thee Nay! 98%
$0.25#17249
"Counter target spell unless its controller pays {2}. Counter that spell unless its controller pays {4} instead if this spell was cast using teamwork."
Spell Shrivel 97%
$0.22#16349
"Counter target spell unless its controller pays {4}. If that spell is countered this way, exile it instead of putting it into its owner's graveyard."
Flip the Switch 97%
$0.15#12570
"Counter target spell unless its controller pays {4}. Create a 2/2 black Zombie creature token with decayed."