Runeboggle 
Instant
$0.04 #26362 0.12 20.6 years
Counter target spell unless its controller pays 
.
.Draw a card.
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Cards similar to Runeboggle 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.
Clash of Wills97%
$0.15↑#12548↑0.22↑11.1 years↓
"Counter target spell unless its controller pays 
."
."
Quench97%
$0.20↑#13076↑0.187.6 years↓
"Counter target spell unless its controller pays ."
."
Confound94%
$0.18↑#11856↑0.00↓25.6 years↑
"Draw a card."
+1 more matching line
Soul Read93%
$0.15↑#15849↑0.123.8 years↓
"• Counter target spell unless its controller pays 
."
."
Mana Tithe92%
$0.78↑#2148↑0.47↑19.6 years
"Counter target spell unless its controller pays ."
."
It'll Quench Ya!92%
$0.27↑#3783↑0.00↓0.8 years↓
"Counter target spell unless its controller pays ."
."
Mindswipe92%
$0.36↑#14660↑0.29↑11.9 years↓
"Counter target spell unless its controller pays . this card deals X damage to that spell's controller."
. this card deals X damage to that spell's controller."
Complicate91%
$0.26↑#13481↑0.33↑23.9 years↑
"Counter target spell unless its controller pays 
."
."
Overrule91%
$0.17↑#210950.50↑20.3 years
"Counter target spell unless its controller pays . You gain X life."
. You gain X life."
Revolutionary Rebuff91%
$0.11↑#220850.40↑9.9 years↓
"Counter target nonartifact spell unless its controller pays ."
."
Censor90%
$0.21↑#13352↑0.56↑9.4 years↓
"Counter target spell unless its controller pays ."
."
Spell Snip90%
$0.12↑#271240.45↑17.9 years↓
"Counter target spell unless its controller pays ."
."
Offering to Asha90%
$0.09↑#262500.24↑17.3 years↓
"Counter target spell unless its controller pays . You gain 4 life."
. You gain 4 life."
Keep Safe90%
$0.25↑#5867↑0.096.4 years↓
"Draw a card."
+1 more matching line
Rethink90%
$0.10↑#230000.38↑26.3 years↑
"Counter target spell unless its controller pays , where X is its mana value."
, where X is its mana value."
Steady Progress90%
$0.29↑#5028↑0.1015.9 years↓
"Draw a card."
Eyes of Gitaxias90%
$0.11↑#20518↑0.29↑3.4 years↓
"Draw a card."
Contentious Plan90%
$0.39↑#2237↑0.187.3 years↓
"Draw a card."
Grip of Amnesia90%
$0.18↑#19664↑0.33↑24.3 years↑
"Draw a card."
+1 more matching line
Force Spike89%
$0.91↑#13278↑0.79↑32.3 years↑
"Counter target spell unless its controller pays ."
."