Assimilation Aegis 
Artifact — Equipment
$0.42 #9834 0.38 2.4 years
When this Equipment enters, exile up to one target creature until this Equipment leaves the battlefield.
Whenever this Equipment becomes attached to a creature, for as long as this Equipment remains attached to it, that creature becomes a copy of a creature card exiled with this Equipment.
Equip 
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Secret Invasion86%
$0.27↓#19314↓0.00↓0.2 years↓
"When this Aura enters, exile up to one target creature other than enchanted creature until this Aura leaves the battlefield. Enchanted creature becomes a copy of that creature until this Aura leaves the battlefield."
Banisher Priest86%
$0.06↓#115280.07↓13.1 years↑
"When this creature enters, exile target creature an opponent controls until this creature leaves the battlefield."
Fairgrounds Warden86%
$0.09↓#18579↓0.57↑9.9 years↑
"When this creature enters, exile target creature an opponent controls until this creature leaves the battlefield."
Stasis Snare86%
$0.10↓#117840.69↑10.9 years↑
"When this enchantment enters, exile target creature an opponent controls until this enchantment leaves the battlefield."
Faith Unbroken86%
$0.10↓#111500.10↓10.1 years↑
"When this Aura enters, exile target creature an opponent controls until this Aura leaves the battlefield."
Blade of Shared Souls84%
$0.25↓#12177↓0.333.6 years↑
"Whenever this Equipment becomes attached to a creature, for as long as this Equipment remains attached to it, you may have that creature become a copy of another target creature you control."
+1 more matching line
Cryptoplasm83%
$0.63↑#12679↓0.07↓15.6 years↑
"At the beginning of your upkeep, you may have this creature become a copy of another target creature, except it has this ability."
Bishop of Binding82%
$0.23↓#18667↓0.07↓8.6 years↑
"When this creature enters, exile target creature an opponent controls until this creature leaves the battlefield."
Silkwrap82%
$0.12↓#27452↓0.25↓11.4 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↓#17970↓0.24↓6.9 years↑
"When this artifact enters, exile target creature an opponent controls with mana value 3 or less until this artifact leaves the battlefield."
Makeshift Binding82%
$0.09↓#15928↓0.27↓2.6 years
"When this enchantment enters, exile target creature an opponent controls until this enchantment leaves the battlefield. You gain 2 life."
Isolation Zone80%
$0.03↓#26381↓0.3210.6 years↑
"When this enchantment enters, exile target creature or enchantment an opponent controls until this enchantment leaves the battlefield."
Thopter Arrest80%
$0.21↓#23599↓0.06↓9.6 years↑
"When this enchantment enters, exile target artifact or creature an opponent controls until this enchantment leaves the battlefield."
Citizen's Arrest80%
$0.02↓#20292↓0.07↓4.0 years↑
"When this enchantment enters, exile target creature or planeswalker an opponent controls until this enchantment leaves the battlefield."
Phantom Steed80%
$0.42#113500.27↓5.1 years↑
"When this creature enters, exile another target creature you control until this creature leaves the battlefield."
Mardu Siegebreaker79%
$0.38↓#3781↑0.291.4 years
"When this creature enters, exile up to one other target creature you control until this creature leaves the battlefield."
Dimensional Exile79%
$0.25↓#17160↓0.00↓0.5 years↓
"When this Aura enters, exile target creature an opponent controls until this Aura leaves the battlefield."
Mimeoplasm, Revered One79%
$0.36↓#14299↓0.25↓1.6 years
": this card becomes a copy of target creature card exiled with it, except it's 0/0 and has this ability."
: this card becomes a copy of target creature card exiled with it, except it's 0/0 and has this ability."
Paleontologist's Pick-Axe // Dinosaur Headdress78%
$0.51↑#17891↓0.25↓2.8 years
"Equipped creature is a copy of the last chosen card."
+2 more matching lines
Alabaster Host Intercessor76%
$0.19↓#14811↓0.05↓3.4 years
"When this creature enters, exile target creature an opponent controls until this creature leaves the battlefield."