Countervailing Winds {2}{U}
Instant
Counter target spell unless its controller pays {1} for each card in your graveyard.
Cycling {2} ({2}, Discard this card: Draw a card.)
click a line to search just that ability, click more to combine them
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."
Circular Logic 100%
$0.20#7416
"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."
Spell Snip 91%
$0.11#26958
"Counter target spell unless its controller pays {1}."
+1 more matching line
Jwari Disruption // Jwari Ruins 91%
$0.42#2704
"Counter target spell unless its controller pays {1}."
Oppressive Will 89%
$0.21#23926
"Counter target spell unless its controller pays {1} for each card in your hand."