Disrupting Shoal 
Instant — Arcane
$16.05 #9387 0.31 21.7 years
You may exile a blue card with mana value X from your hand rather than pay this spell's mana cost.
Counter target spell if its mana value is X.
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Force of Negation90%
$45.17↑#273↑1.95↑7.4 years↓
"If it's not your turn, you may exile a blue card from your hand rather than pay this spell's mana cost."
Force of Will89%
$55.32↑#204↑2.15↑30.4 years↑
"You may pay 1 life and exile a blue card from your hand rather than pay this spell's mana cost."
+1 more matching line
Mental Misstep88%
$5.95↓#474↑0.91↑15.4 years↓
"Counter target spell with mana value 1."
Flare of Denial88%
$3.26↓#1451↑1.09↑2.3 years↓
"Counter target spell."
+1 more matching line
Misdirection86%
$12.41↓#1493↑0.95↑27.0 years↑
"You may exile a blue card from your hand rather than pay this spell's mana cost."
Foil84%
$1.67↓#4262↑0.90↑26.4 years↑
"Counter target spell."
Subtlety84%
$10.24↓#4241↑0.80↑5.5 years↓
"Evoke—Exile a blue card from your hand."
Spell Snare82%
$0.36↓#83950.3520.5 years↓
"Counter target spell with mana value 2."
Thwart82%
$0.73↓#15515↓0.3327.0 years↑
"Counter target spell."
Snapback80%
$0.36↓#4041↑0.3020.0 years↓
"You may exile a blue card from your hand rather than pay this spell's mana cost."
Commandeer80%
$3.49↓#1882↑1.08↑20.2 years↓
"You may exile two blue cards from your hand rather than pay this spell's mana cost."
Pact of Negation77%
$15.96↓#372↑1.48↑19.5 years↓
"Counter target spell."
Minor Misstep76%
$0.14↓#14966↓0.403.7 years↓
"Counter target spell with mana value 1 or less."
Thoughtbind76%
$0.11↓#29535↓0.12↓22.1 years
"Counter target spell with mana value 4 or less."
Blazing Shoal75%
$3.34↓#14369↓0.16↓21.7 years
"You may exile a red card with mana value X from your hand rather than pay this spell's mana cost."
Sickening Shoal74%
$8.98↓#19615↓0.12↓21.7 years
"You may exile a black card with mana value X from your hand rather than pay this spell's mana cost."
Nourishing Shoal74%
$0.91↓#23065↓0.20↓21.7 years
"You may exile a green card with mana value X from your hand rather than pay this spell's mana cost."
Fierce Guardianship74%
$61.05↑#83↑2.29↑6.5 years↓
"Counter target noncreature spell."
Reject Imperfection72%
$0.32↓#4771↑0.18↓3.7 years↓
"Counter target spell. If that spell's mana value was 3 or less, proliferate."
Shining Shoal71%
$2.16↓#22925↓0.10↓21.7 years
"You may exile a white card with mana value X from your hand rather than pay this spell's mana cost."