Circle of Confinement 
Enchantment
$0.16 #26209 0.27 4.9 years
When this enchantment enters, exile target creature an opponent controls with mana value 3 or less until this enchantment leaves the battlefield.
Whenever an opponent casts a Vampire spell with the same name as a card exiled with this enchantment, you gain 2 life.
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Cards similar to Circle of Confinement expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Silkwrap82%
$0.10↓#276260.00↓11.6 years↑
"When this enchantment enters, exile target creature with mana value 3 or less an opponent controls until this enchantment leaves the battlefield."
Glass Casket82%
$0.06↓#18264↑0.06↓7.0 years↑
"When this artifact enters, exile target creature an opponent controls with mana value 3 or less until this artifact leaves the battlefield."
Stasis Snare79%
$0.10↓#11821↑0.13↓11.0 years↑
"When this enchantment enters, exile target creature an opponent controls until this enchantment leaves the battlefield."
Banisher Priest79%
$0.08↓#11673↑0.13↓13.3 years↑
"When this creature enters, exile target creature an opponent controls until this creature leaves the battlefield."
Fairgrounds Warden79%
$0.08↓#18584↑0.05↓10.1 years↑
"When this creature enters, exile target creature an opponent controls until this creature leaves the battlefield."
Faith Unbroken79%
$0.09↓#11431↑0.11↓10.2 years↑
"When this Aura enters, exile target creature an opponent controls until this Aura leaves the battlefield."
Bishop of Binding77%
$0.18↑#18825↑0.17↓8.8 years↑
"When this creature enters, exile target creature an opponent controls until this creature leaves the battlefield."
+1 more matching line
Makeshift Binding77%
$0.13↓#16185↑0.292.7 years↓
"When this enchantment enters, exile target creature an opponent controls until this enchantment leaves the battlefield. You gain 2 life."
Assimilation Aegis76%
$0.47↑#9899↑0.182.5 years↓
"When this Equipment enters, exile up to one target creature until this Equipment leaves the battlefield."
Thopter Arrest76%
$0.20↑#239780.279.7 years↑
"When this enchantment enters, exile target artifact or creature an opponent controls until this enchantment leaves the battlefield."
Dimensional Exile75%
$0.22↑#16666↑0.260.6 years↓
"When this Aura enters, exile target creature an opponent controls until this Aura leaves the battlefield."
Isolation Zone75%
$0.05↓#267680.11↓10.7 years↑
"When this enchantment enters, exile target creature or enchantment an opponent controls until this enchantment leaves the battlefield."
Citizen's Arrest74%
$0.08↓#20728↑0.06↓4.1 years
"When this enchantment enters, exile target creature or planeswalker an opponent controls until this enchantment leaves the battlefield."
Solarium Sentry73%
$0.31↑#19077↑0.15↓0.0 years↓
"Whenever an opponent casts a spell with mana value 2 or less, you gain 2 life."
Earth Kingdom Jailer72%
$0.12↓#11369↑0.12↓0.9 years↓
"When this creature enters, exile up to one target artifact, creature, or enchantment an opponent controls with mana value 3 or greater until this creature leaves the battlefield."
Suspension Field72%
$0.24↑#210760.00↓12.1 years↑
"When this enchantment enters, you may exile target creature with toughness 3 or greater until this enchantment leaves the battlefield."
Chained to the Rocks72%
$0.30↑#17425↑0.3513.1 years↑
"When this Aura enters, exile target creature an opponent controls until this Aura leaves the battlefield."
Avacynian Missionaries // Lunarch Inquisitors72%
$0.13↓#276970.2010.5 years↑
"When this creature transforms into this card, you may exile another target creature until this creature leaves the battlefield."
Hardlight Containment71%
$0.26↑#12865↑0.13↓1.2 years↓
"When this Aura enters, exile target creature an opponent controls until this Aura leaves the battlefield."
Seam Rip71%
$0.71↑#16182↑0.12↓1.2 years↓
"When this enchantment enters, exile target nonland permanent an opponent controls with mana value 2 or less until this enchantment leaves the battlefield."