Sister of Silence 
Creature — Human Knight
$0.41 #12746 0.61 3.9 years
Flash
Psychic Abomination — When this creature enters, counter target instant spell, sorcery spell, activated ability, or triggered ability.
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Spider-Sense88%
$0.99↑#3024↑0.651.0 years↓
"Counter target instant spell, sorcery spell, or triggered ability."
Stratus Dancer86%
$0.25↓#8199↑0.73↑11.4 years↑
"When this creature is turned face up, counter target instant or sorcery spell."
Lictor80%
$0.31↓#18227↓0.82↑3.9 years
"Flash"
Extinguish80%
$0.25↓#27936↓0.6028.2 years↑
"Counter target sorcery spell."
Envelop80%
$3.31↑#20582↓0.6024.3 years↑
"Counter target sorcery spell."
Dispel79%
$0.28↓#919↑0.33↓16.6 years↑
"Counter target instant spell."
Muddle the Mixture78%
$1.84↑#694↑0.44↓20.9 years↑
"Counter target instant or sorcery spell."
Obscura Charm78%
$0.22↓#8540↑0.29↓4.4 years
"• Counter target instant or sorcery spell."
Psychic Rebuttal78%
$0.20↓#20057↓0.19↓11.1 years↑
"Counter target instant or sorcery spell that targets you."
Tishana's Tidebinder78%
$1.98↑#2768↑0.522.8 years↓
"Flash"
Miscast76%
$1.20↑#2696↑0.31↓6.2 years↑
"Counter target instant or sorcery spell unless its controller pays 
."
."
Necron Deathmark76%
$5.74↑#4827↑0.17↓3.9 years
"Flash"
Green Slime76%
$1.55↑#5604↑0.27↓4.2 years
"Flash"
Sautekh Immortal76%
$0.35↓#16208↓0.25↓3.9 years
"Flash"
Unyaro Griffin75%
$0.22↓#24244↓0.14↓29.9 years↑
"Sacrifice this creature: Counter target red instant or sorcery spell."
Molten Influence74%
$7.84↑#17581↓0.91↑24.9 years↑
"Counter target instant or sorcery spell unless its controller has this card deal 4 damage to them."
Disallow74%
$0.41#1819↑0.45↓9.6 years↑
"Counter target spell, activated ability, or triggered ability."
Flusterstorm74%
$4.99↑#307↑0.7015.2 years↑
"Counter target instant or sorcery spell unless its controller pays 
."
."
Flash Counter72%
$0.22↓#18124↓0.05↓32.3 years↑
"Counter target instant spell."
Disrupt72%
$0.27↓#102160.43↓29.2 years↑
"Counter target instant or sorcery spell unless its controller pays ."
."