Mana Leak 
Instant
$0.22 #1741 0.28 28.5 years
Counter target spell unless its controller pays 
.
.Click a line or tag to filter
Cards similar to Mana Leak 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.
Mindstatic97%
$0.15↓#22747↓0.3013.3 years↓
"Counter target spell unless its controller pays 
."
."
Convolute96%
$0.06↓#10948↓0.3720.9 years↓
"Counter target spell unless its controller pays 
."
."
Force Spike94%
$0.91↑#13278↓0.79↑32.3 years↑
"Counter target spell unless its controller pays ."
."
Spell Pierce88%
$0.28↑#910↑0.3716.9 years↓
"Counter target noncreature spell unless its controller pays 
."
."
Miscalculation88%
$0.29↑#11239↓0.3827.6 years
"Counter target spell unless its controller pays ."
."
Force Void86%
$0.22#28183↓0.2531.3 years↑
"Counter target spell unless its controller pays ."
."
Quench80%
$0.20↓#13076↓0.18↓7.6 years↓
"Counter target spell unless its controller pays ."
."
Clash of Wills80%
$0.15↓#12548↓0.2211.1 years↓
"Counter target spell unless its controller pays 
."
."
Runeboggle78%
$0.04↓#26362↓0.12↓20.6 years↓
"Counter target spell unless its controller pays ."
."
Dismiss77%
$0.14↓#11646↓0.50↑28.9 years
"Counter target spell."
It'll Quench Ya!76%
$0.27↑#3783↓0.00↓0.8 years↓
"Counter target spell unless its controller pays ."
."
Mana Tithe76%
$0.78↑#2148↓0.47↑19.6 years↓
"Counter target spell unless its controller pays ."
."
Counterspell76%
$2.27↑#16↑0.70↑33.1 years↑
"Counter target spell."
Soul Read75%
$0.15↓#15849↓0.12↓3.8 years↓
"• Counter target spell unless its controller pays ."
."
Disrupt75%
$0.27↑#10216↓0.43↑29.2 years
"Counter target instant or sorcery spell unless its controller pays ."
."
Intervene75%
$0.37↑#15789↓0.50↑27.6 years
"Counter target spell that targets a creature."
Mindswipe74%
$0.36↑#14660↓0.2911.9 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."
Power Sink74%
$0.14↓#9857↓0.81↑33.1 years↑
"Counter target spell unless its controller pays . If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana."
. If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana."
Complicate74%
$0.26↑#13481↓0.3323.9 years↓
"Counter target spell unless its controller pays ."
."
Mystical Dispute74%
$0.38↑#11036↓0.246.9 years↓
"Counter target spell unless its controller pays ."
."