Circular Logic {2}{U}
Instant
Counter target spell unless its controller pays {1} for each card in your graveyard.
Madness {U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
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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.
Rakshasa's Disdain 100%
$0.07#18462
"Counter target spell unless its controller pays {1} for each card in your graveyard."
Countervailing Winds 100%
$0.24#8952
"Counter target spell unless its controller pays {1} for each card in your graveyard."
Thassa's Rebuff 92%
$0.21#14837
"Counter target spell unless its controller pays {X}, where X is your devotion to blue."
Rethink 92%
$0.14#22718
"Counter target spell unless its controller pays {X}, where X is its mana value."
Spell Rupture 92%
$0.12#11379
"Counter target spell unless its controller pays {X}, where X is the greatest power among creatures you control."
Rune Snag 91%
$0.10#28445
"Counter target spell unless its controller pays {2} plus an additional {2} for each card named this card in each graveyard."
Jwari Disruption // Jwari Ruins 91%
$0.42#2704
"Counter target spell unless its controller pays {1}."