Foil 
Instant
$1.67 #4262 0.90 26.4 years
You may discard an Island card and another card rather than pay this spell's mana cost.
Counter target spell.
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Flare of Denial90%
$3.26↑#1451↑1.09↑2.3 years↓
"Counter target spell."
Thwart86%
$0.73↓#15515↓0.33↓27.0 years
"You may return three Islands you control to their owner's hand rather than pay this spell's mana cost."
+1 more matching line
Daze85%
$0.87↓#2995↑0.59↓26.7 years
"You may return an Island you control to its owner's hand rather than pay this spell's mana cost."
+1 more matching line
Pact of Negation84%
$15.96↑#372↑1.48↑19.5 years↓
"Counter target spell."
Abolish80%
$0.27↓#12632↓0.44↓26.4 years
"You may discard a Plains card rather than pay this spell's mana cost."
Fierce Guardianship79%
$61.05↑#83↑2.29↑6.5 years↓
"Counter target noncreature spell."
Mental Misstep78%
$5.95↑#474↑0.9115.4 years↓
"Counter target spell with mana value 1."
Not of This World78%
$5.90↑#2376↑0.47↓16.5 years↓
"Counter target spell or ability that targets a permanent you control."
Flameshot76%
$0.21↓#24844↓0.10↓26.4 years
"You may discard a Mountain card rather than pay this spell's mana cost."
Outbreak75%
$0.17↓#30012↓0.28↓26.4 years
"You may discard a Swamp card rather than pay this spell's mana cost."
Snag74%
$0.28↓#18355↓0.41↓26.4 years
"You may discard a Forest card rather than pay this spell's mana cost."
Gush74%
$2.39↑#6160↓0.56↓27.0 years
"You may return two Islands you control to their owner's hand rather than pay this spell's mana cost."
Saprazzan Legate74%
$0.35↓#21301↓0.00↓27.0 years
"If an opponent controls a Mountain and you control an Island, you may cast this spell without paying its mana cost."
Cancel74%
$0.07↓#2087↑0.31↓20.0 years↓
"Counter target spell."
Submerge74%
$3.29↑#43090.35↓26.7 years
"If an opponent controls a Forest and you control an Island, you may cast this spell without paying its mana cost."
Tidal Bore73%
$0.41↓#14034↓0.33↓27.0 years
"You may return an Island you control to its owner's hand rather than pay this spell's mana cost."
Ensnare72%
$0.66↓#13965↓0.50↓26.7 years
"You may return two Islands you control to their owner's hand rather than pay this spell's mana cost."
Disrupting Shoal71%
$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."
+1 more matching line
Outwit71%
$0.06↓#24186↓0.18↓14.5 years↓
"Counter target spell that targets a player."
Contradict70%
$0.05↓#19661↓0.19↓11.6 years↓
"Counter target spell."