Geistlight Snare {2}{U}
Instant
This spell costs {1} less to cast if you control a Spirit. It also costs {1} less to cast if you control an enchantment.
Counter target spell unless its controller pays {3}.
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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.
Sage's Dousing 99%
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"Counter target spell unless its controller pays {3}. If you control a Wizard, draw a card."
Lookout's Dispersal 99%
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"Counter target spell unless its controller pays {4}."
+1 more matching line
No More Lies 98%
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"Counter target spell unless its controller pays {3}. 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."