Fierce Guardianship 
Instant
$61.05 #83 2.29 6.5 years
If you control a commander, you may cast this spell without paying its mana cost.
Counter target noncreature spell.
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Negate88%
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"Counter target noncreature spell."
Spite // Malice88%
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"Counter target noncreature spell."
Deadly Rollick86%
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"Counter target noncreature spell."
Deflecting Swat84%
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"If you control a commander, you may cast this spell without paying its mana cost."
Dovin's Veto84%
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"Counter target noncreature spell."
Flawless Maneuver82%
$8.09↓#170↓1.06↓6.5 years
"If you control a commander, you may cast this spell without paying its mana cost."
Sapphire Dragon // Psionic Pulse82%
$0.32↓#5806↓0.25↓4.4 years↓
"Counter target noncreature spell."
Force of Negation82%
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"Counter target noncreature spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard."
Obscuring Haze81%
$4.76↓#1491↓0.72↓6.5 years
"If you control a commander, you may cast this spell without paying its mana cost."
Force of Will80%
$55.32↓#204↓2.15↓30.4 years↑
"Counter target spell."
Foil79%
$1.67↓#4262↓0.90↓26.4 years↑
"Counter target spell."
Countersquall78%
$0.46↓#3538↓0.31↓17.7 years↑
"Counter target noncreature spell. Its controller loses 2 life."
Flare of Denial78%
$3.26↓#1451↓1.09↓2.3 years↓
"Counter target spell."
+1 more matching line
Pact of Negation78%
$15.96↓#372↓1.48↓19.5 years↑
"Counter target spell."
Glen Elendra Archmage77%
$9.92↓#1721↓0.56↓18.2 years↑
", Sacrifice this creature: Counter target noncreature spell."
, Sacrifice this creature: Counter target noncreature spell."
Riverwalk Technique76%
$0.20↓#18132↓0.06↓1.5 years↓
"• Counter target noncreature spell."
Thwart76%
$0.73↓#15515↓0.33↓27.0 years↑
"Counter target spell."
Stronghold Machinist76%
$0.27↓#21587↓0.32↓26.7 years↑
", 
, Discard a card: Counter target noncreature spell."
, , Discard a card: Counter target noncreature spell."
Stubborn Denial76%
$4.43↓#1536↓0.41↓12.1 years↑
"Counter target noncreature spell unless its controller pays 
."
."