Plasm Capture 
Instant
$0.26 #6630 0.05 13.3 years
Counter target spell. At the beginning of your next first main phase, add X mana in any combination of colors, where X is that spell's mana value.
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Mana Drain96%
$54.91↑#117↑1.89↑32.3 years↑
"Counter target spell. At the beginning of your next main phase, add an amount of 
equal to that spell's mana value."
equal to that spell's mana value."
Scattering Stroke90%
$0.30↑#12789↓0.61↑18.9 years↑
"Counter target spell. Clash with an opponent. If you win, at the beginning of your next main phase, you may add an amount of equal to that spell's mana value."
equal to that spell's mana value."
Mystic Genesis82%
$0.17↓#18587↓0.0013.6 years
"Counter target spell. Create an X/X green Ooze creature token, where X is that spell's mana value."
Spell Swindle80%
$1.49↑#3178↑0.43↑8.9 years↓
"Counter target spell. Create X Treasure tokens, where X is that spell's mana value."
Mana Sculpt76%
$0.94↑#4057↑0.000.4 years↓
"Counter target spell. If you control a Wizard, add an amount of equal to the amount of mana spent to cast that spell at the beginning of your next main phase."
equal to the amount of mana spent to cast that spell at the beginning of your next main phase."
Disdainful Stroke76%
$0.13↓#2368↑0.24↑11.9 years↓
"Counter target spell with mana value 4 or greater."
Electrosiphon75%
$0.31↑#56990.27↑2.5 years↓
"Counter target spell. You get an amount of 
equal to its mana value."
equal to its mana value."
Reinterpret74%
$0.43↑#9710↓0.87↑5.4 years↓
"Counter target spell. You may cast a spell with equal or lesser mana value from your hand without paying its mana cost."
Draining Whelk73%
$0.39↑#13168↓0.1419.9 years↑
"When this creature enters, counter target spell. Put X +1/+1 counters on this creature, where X is that spell's mana value."
Metamorphosis72%
$0.32↑#8705↓0.22↑32.7 years↑
"Add X mana of any one color, where X is 1 plus the sacrificed creature's mana value. Spend this mana only to cast creature spells."
Access Denied70%
$2.60↑#3704↑0.34↑4.5 years↓
"Counter target spell. Create X 1/1 colorless Thopter artifact creature tokens with flying, where X is that spell's mana value."
Channel the Suns70%
$0.70↑#16970↓0.47↑22.3 years↑
"Add 
."
."
Seething Song70%
$10.70↑#311↑0.50↑22.9 years↑
"Add ."
."
Irencrag Feat70%
$0.78↑#72880.59↑6.9 years↓
"Add seven . You can cast only one more spell this turn."
. You can cast only one more spell this turn."