Nether Void 
World Enchantment
$673.40 #16326 2.18 32.4 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%
$3.18↓#10165↑1.43↓15.4 years↓
"Whenever an opponent casts a spell, counter it unless that player pays 
."
."
Ice Cave90%
$0.74↓#21369↓0.82↓25.4 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%
$196.62↓#21499↓1.61↓32.4 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%
$0.36↓#30496↓0.18↓25.1 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%
$2.33↓#7172↑1.35↓24.4 years↓
"Whenever a player casts a spell, that player flips a coin. If they lose the flip, counter that spell."
Disruptive Student82%
$0.20↓#20790↓0.83↓28.0 years↓
"
: Counter target spell unless its controller pays ."
: Counter target spell unless its controller pays ."
Vodalian Mage81%
$0.16↓#23816↓0.35↓32.0 years
"
, : Counter target spell unless its controller pays ."
, : Counter target spell unless its controller pays ."
Chalice of the Void78%
$16.39↓#9424↑1.14↓23.0 years↓
"Whenever a player casts a spell with mana value equal to the number of charge counters on this artifact, counter that spell."
Disruptive Pitmage77%
$0.14↓#179540.53↓24.0 years↓
": Counter target spell unless its controller pays ."
: Counter target spell unless its controller pays ."
Presence of the Master77%
$0.55↓#26381↓1.30↓32.4 years
"Whenever a player casts an enchantment spell, counter it."
Decree of Silence76%
$21.71↓#11742↑1.16↓23.4 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%
$2.98↓#1297↑0.80↓2.3 years↓
"Whenever a player casts a spell, if no mana was spent to cast it, counter that spell."
Hesitation75%
$0.31↓#23370↓0.60↓28.6 years↓
"When a player casts a spell, sacrifice this enchantment and counter that spell."
Ghost-Lit Warder75%
$0.29↓#24066↓0.00↓21.4 years↓
", : Counter target spell unless its controller pays 
."
, : Counter target spell unless its controller pays ."
Void Mirror75%
$0.39↓#156230.89↓5.5 years↓
"Whenever a player casts a spell, if no colored mana was spent to cast it, counter that spell."
Mundungu75%
$0.32↓#24648↓0.25↓29.7 years↓
": Counter target spell unless its controller pays and 1 life."
: Counter target spell unless its controller pays and 1 life."
Thrull Wizard74%
$0.18↓#21890↓0.15↓32.0 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%
$2.60↓#28491↓0.38↓30.0 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%
$0.28↓#21452↓0.35↓10.2 years↓
"When an opponent casts a spell, sacrifice this enchantment and counter that spell."
Clash of Wills73%
$0.20↓#12412↑0.29↓11.3 years↓
"Counter target spell unless its controller pays ."
."