Memory Erosion 
Enchantment
$7.21 #3681 0.57 17.9 years
Whenever an opponent casts a spell, that player mills two cards.
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Cards similar to Memory Erosion expected a card that isn't here?
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Mogg Sentry78%
$0.33↓#22304↓0.00↓25.6 years↑
"Whenever an opponent casts a spell, this creature gets +2/+2 until end of turn."
Straw Golem76%
$0.16↓#30011↓0.00↓29.2 years↑
"When an opponent casts a creature spell, sacrifice this creature."
Sphinx Mindbreaker75%
$1.68↓#15806↓0.20↓6.6 years↓
"When this creature enters, each opponent mills ten cards."
Nimana Skydancer74%
$0.08↓#22966↓0.20↓5.9 years↓
"When this creature enters, target opponent mills two cards."
Dragonlair Spider73%
$0.47↓#8231↓0.10↓14.3 years↓
"Whenever an opponent casts a spell, create a 1/1 green Insect creature token."
Nemesis of Reason72%
$3.24↓#4532↓0.5117.3 years
"Whenever this creature attacks, defending player mills ten cards."
Shriekgeist72%
$0.13↓#23593↓0.00↓14.6 years↓
"Whenever this creature deals combat damage to a player, that player mills two cards."
Aether Sting71%
$0.43↓#14933↓0.12↓27.2 years↑
"Whenever an opponent casts a creature spell, this enchantment deals 1 damage to that player."
Psychic Corrosion70%
$4.45↓#1780↑0.618.1 years↓
"Whenever you draw a card, each opponent mills two cards."
Mind Sculpt70%
$0.27↓#11612↓0.6014.1 years↓
"Target opponent mills seven cards."
Mind's Dilation70%
$0.40↓#2656↑0.76↑10.1 years↓
"Whenever an opponent casts their first spell each turn, that player exiles the top card of their library. If it's a nonland card, you may cast it without paying its mana cost."