Countermand 
Instant
$0.06 #14082 0.29 12.3 years
Counter target spell. Its controller mills four cards.
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Psychic Strike100%
$0.28↑#9042↑0.14↓13.6 years↑
"Counter target spell. Its controller mills two cards."
Thought Collapse100%
$0.32↑#5686↑0.297.6 years↓
"Counter target spell. Its controller mills three cards."
Didn't Say Please96%
$0.34↑#3431↑0.196.9 years↓
"Counter target spell. Its controller mills three cards."
Tome Scour88%
$0.14↑#118380.50↑17.1 years↑
"Target player mills five cards."
Glimpse the Unthinkable88%
$3.56↑#5179↑0.43↑20.9 years↑
"Target player mills ten cards."
Thought Scour86%
$0.43↑#1784↑0.18↓14.6 years↑
"Target player mills two cards."
Merfolk Secretkeeper // Venture Deeper84%
$0.27↑#132580.13↓6.9 years↓
"Target player mills four cards."
Returned Centaur84%
$0.04↓#21302↓0.11↓12.9 years
"When this creature enters, target player mills four cards."
Homarid Explorer84%
$0.08↑#24051↓0.71↑8.4 years↓
"When this creature enters, target player mills four cards."
Compelling Argument83%
$0.18↑#164350.14↓9.4 years↓
"Target player mills five cards."
Dampen Thought82%
$0.14↑#22389↓0.13↓21.9 years↑
"Target player mills four cards."
Outwit82%
$0.07↑#23869↓0.18↓14.3 years↑
"Counter target spell that targets a player."
Wall of Lost Thoughts82%
$0.21↑#139720.277.6 years↓
"When this creature enters, target player mills four cards."
Merrow Witsniper82%
$0.26↑#26272↓0.53↑18.6 years↑
"When this creature enters, target player mills a card."
Induce Paranoia82%
$0.25↑#21361↓0.47↑20.9 years↑
"Counter target spell. If 
was spent to cast this spell, that spell's controller mills X cards, where X is the spell's mana value."
was spent to cast this spell, that spell's controller mills X cards, where X is the spell's mana value."
Cancel81%
$0.06#2057↑0.2919.9 years↑
"Counter target spell."
Sweet Oblivion80%
$0.17↑#22260↓0.05↓6.6 years↓
"Target player mills four cards."
Ray of Erasure80%
$0.19↑#21360↓0.3131.3 years↑
"Target player mills a card."
Dream Twist80%
$0.21↑#118410.00↓14.9 years↑
"Target player mills three cards."
Desperate Bloodseeker80%
$0.19↑#143920.00↓2.4 years↓
"When this creature enters, target player mills two cards."