Tidal Bore 
Instant
$0.36 #14140 0.11 26.9 years
You may return an Island you control to its owner's hand rather than pay this spell's mana cost.
You may tap or untap target creature.
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Ensnare96%
$0.67↑#137240.35↑26.6 years
"You may return two Islands you control to their owner's hand rather than pay this spell's mana cost."
Gush96%
$2.33↑#6094↑0.65↑26.9 years
"You may return two Islands you control to their owner's hand rather than pay this spell's mana cost."
Daze94%
$1.11↑#3055↑0.51↑26.6 years
"You may return an Island you control to its owner's hand rather than pay this spell's mana cost."
Thwart94%
$0.80↑#154280.50↑26.9 years
"You may return three Islands you control to their owner's hand rather than pay this spell's mana cost."
Bounding Krasis86%
$0.12↓#17755↓0.29↑11.1 years↓
"When this creature enters, you may tap or untap target creature."
Thassa's Ire82%
$0.14↓#20544↓0.30↑12.3 years↓
"
: You may tap or untap target creature."
: You may tap or untap target creature."
Puppeteer82%
$0.18↓#154670.41↑24.9 years↓
", 
: You may tap or untap target creature."
, : You may tap or untap target creature."
Retreat to Coralhelm81%
$0.36#1769↑0.39↑10.9 years↓
"• You may tap or untap target creature."
Niblis of the Breath81%
$0.28↓#17509↓0.40↑14.6 years↓
", : You may tap or untap target creature."
, : You may tap or untap target creature."
Stonybrook Angler81%
$0.23↓#21785↓0.24↑18.9 years↓
", : You may tap or untap target creature."
, : You may tap or untap target creature."
Teardrop Kami81%
$0.20↓#19087↓0.00↓21.6 years↓
"Sacrifice this creature: You may tap or untap target creature."
Puppet Strings80%
$0.36#9531↑0.0628.9 years↑
"
, : You may tap or untap target creature."
, : You may tap or untap target creature."
Tideforce Elemental79%
$0.28↓#144170.36↑16.6 years↓
", : You may tap or untap another target creature."
, : You may tap or untap another target creature."
Granite Witness78%
$0.06↓#24641↓0.43↑2.6 years↓
"When this creature is turned face up, you may tap or untap target creature."
Glamermite76%
$0.23↓#133400.00↓0.6 years↓
"• Untap target creature."
Chain Stasis76%
$2.51↑#19304↓0.25↑30.9 years↑
"You may tap or untap target creature. Then that creature's controller may pay . If the player does, they may copy this spell and may choose a new target for that copy."
. If the player does, they may copy this spell and may choose a new target for that copy."
Fathom Seer76%
$0.05↓#19972↓0.0519.9 years↓
"Morph—Return two Islands you control to their owner's hand. You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost."
. Turn it face up any time for its morph cost."
Flooded Shoreline74%
$2.23↑#20919↓0.0729.6 years↑
", Return two Islands you control to their owner's hand: Return target creature to its owner's hand."
, Return two Islands you control to their owner's hand: Return target creature to its owner's hand."
Waterspout Djinn72%
$0.10↓#31371↓0.00↓29.6 years↑
"At the beginning of your upkeep, sacrifice this creature unless you return an untapped Island you control to its owner's hand."
Elite Interceptor // Rejoinder72%
$0.19↓#162290.00↓0.4 years↓
"You may tap or untap target creature."