Nether Void 
World Enchantment
$519.01 #16171 2.23 32.3 years
Whenever a player casts a spell, counter it unless that player pays .
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Cards similar to Nether Void expected a card that isn't here?
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Chancellor of the Annex96%
$2.86↓#10169↑0.80↓15.3 years↓
"Whenever an opponent casts a spell, counter it unless that player pays 
."
."
Ice Cave90%
$0.77↓#21126↓0.92↓25.3 years↓
"Whenever a player casts a spell, any other player may pay that spell's mana cost. If a player does, counter the spell."
In the Eye of Chaos90%
$193.45↓#21265↓1.30↓32.3 years
"Whenever a player casts an instant spell, counter it unless that player pays 
, where X is its mana value."
, where X is its mana value."
Cephalid Shrine88%
$0.29↓#30163↓0.44↓24.9 years↓
"Whenever a player casts a spell, counter that spell unless that player pays , where X is the number of cards in all graveyards with the same name as the spell."
, where X is the number of cards in all graveyards with the same name as the spell."
Planar Chaos84%
$2.31↓#7147↑1.41↓24.3 years↓
"Whenever a player casts a spell, that player flips a coin. If they lose the flip, counter that spell."
Disruptive Student82%
$0.21↓#20535↓0.14↓27.9 years↓
"
: Counter target spell unless its controller pays ."
: Counter target spell unless its controller pays ."
Vodalian Mage81%
$0.14↓#23508↓0.33↓31.8 years
"
, : Counter target spell unless its controller pays ."
, : Counter target spell unless its controller pays ."
Disruptive Pitmage78%
$0.15↓#176670.15↓23.9 years↓
": Counter target spell unless its controller pays ."
: Counter target spell unless its controller pays ."
Chalice of the Void78%
$16.39↓#9268↑1.14↓22.9 years↓
"Whenever a player casts a spell with mana value equal to the number of charge counters on this artifact, counter that spell."
Presence of the Master77%
$0.46↓#26110↓1.27↓32.3 years
"Whenever a player casts an enchantment spell, counter it."
Decree of Silence76%
$29.75↓#11514↑1.15↓23.3 years↓
"Whenever an opponent casts a spell, counter that spell and put a depletion counter on this enchantment. If there are three or more depletion counters on this enchantment, sacrifice it."
Vexing Bauble76%
$2.17↓#1304↑0.51↓2.2 years↓
"Whenever a player casts a spell, if no mana was spent to cast it, counter that spell."
Hesitation75%
$0.30↓#22967↓0.13↓28.5 years↓
"When a player casts a spell, sacrifice this enchantment and counter that spell."
Ghost-Lit Warder75%
$0.26↓#23685↓0.41↓21.3 years↓
", : Counter target spell unless its controller pays 
."
, : Counter target spell unless its controller pays ."
Void Mirror75%
$0.37↓#156111.00↓5.3 years↓
"Whenever a player casts a spell, if no colored mana was spent to cast it, counter that spell."
Mundungu75%
$0.32↓#24423↓0.78↓29.6 years↓
": Counter target spell unless its controller pays and 1 life."
: Counter target spell unless its controller pays and 1 life."
Thrull Wizard74%
$0.14↓#21536↓0.50↓31.8 years
": Counter target black spell unless that spell's controller pays or ."
: Counter target black spell unless that spell's controller pays or ."
Bazaar of Wonders74%
$2.52↓#28239↓0.50↓29.9 years↓
"Whenever a player casts a spell, counter it if a card with the same name is in a graveyard or a nontoken permanent with the same name is on the battlefield."
Lunar Force74%
$0.25↓#21116↓0.22↓10.1 years↓
"When an opponent casts a spell, sacrifice this enchantment and counter that spell."
Clash of Wills73%
$0.15↓#12548↑0.22↓11.1 years↓
"Counter target spell unless its controller pays ."
."