Dual Nature 
Enchantment
$2.69 #20065 0.35 26.4 years
Whenever a nontoken creature enters, its controller creates a token that's a copy of that creature.
Whenever a nontoken creature leaves the battlefield, exile all tokens with the same name as that creature.
When this enchantment leaves the battlefield, exile all tokens created with this enchantment.
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Cards similar to Dual Nature expected a card that isn't here?
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Bramble Sovereign94%
$1.05↓#4696↑0.58↑8.4 years↓
"Whenever another nontoken creature enters, you may pay 
. If you do, that creature's controller creates a token that's a copy of that creature."
. If you do, that creature's controller creates a token that's a copy of that creature."
Dance of Many90%
$0.48↓#165870.00↓32.2 years↑
"When this enchantment leaves the battlefield, exile the token."
+1 more matching line
Theoretical Duplication83%
$0.59↓#6541↑0.06↓5.5 years↓
"Whenever a nontoken creature an opponent controls enters this turn, create a token that's a copy of that creature."
Arcane Artisan83%
$0.35↓#192250.13↓8.4 years↓
"When this creature leaves the battlefield, exile all tokens created with it at the beginning of the next end step."
Minion Reflector83%
$1.67↓#15111↑0.05↓18.0 years↓
"Whenever a nontoken creature you control enters, you may pay 
. If you do, create a token that's a copy of that creature, except it has haste and "At the beginning of the end step, sacrifice this permanent.""
. If you do, create a token that's a copy of that creature, except it has haste and "At the beginning of the end step, sacrifice this permanent.""
Faerie Artisans82%
$1.81↓#4899↑0.58↑9.9 years↓
"Whenever a nontoken creature an opponent controls enters, create a token that's a copy of that creature except it's an artifact in addition to its other types. Then exile all other tokens created with this creature."
Shaun, Father of Synths82%
$0.31↓#6848↑0.80↑2.6 years↓
"When this card leaves the battlefield, exile all Synth tokens you control."
Severance Priest79%
$0.11↓#24408↓0.21↓1.5 years↓
"When this creature leaves the battlefield, the exiled card's owner creates an X/X white Spirit creature token, where X is the mana value of the exiled card."
Flameshadow Conjuring79%
$3.17↑#3082↑0.20↓11.3 years↓
"Whenever a nontoken creature you control enters, you may pay 
. If you do, create a token that's a copy of that creature. That token gains haste. Exile it at the beginning of the next end step."
. If you do, create a token that's a copy of that creature. That token gains haste. Exile it at the beginning of the next end step."
Necroduality78%
$6.04↑#3040↑0.48↑4.9 years↓
"Whenever a nontoken Zombie you control enters, create a token that's a copy of that creature."
Skyclave Apparition77%
$0.24↓#1239↑0.396.1 years↓
"When this creature leaves the battlefield, the exiled card's owner creates an X/X blue Illusion creature token, where X is the mana value of the exiled card."
Riku of Two Reflections76%
$5.55↑#12385↑0.2615.3 years↓
"Whenever another nontoken creature you control enters, you may pay 
. If you do, create a token that's a copy of that creature."
. If you do, create a token that's a copy of that creature."
Genesis Chamber76%
$3.46↑#2844↑0.20↓22.7 years↓
"Whenever a nontoken creature enters, if this artifact is untapped, that creature's controller creates a 1/1 colorless Myr artifact creature token."
Molten Echoes75%
$8.79↑#2474↑0.396.5 years↓
"Whenever a nontoken creature you control of the chosen type enters, create a token that's a copy of that creature. That token gains haste. Exile it at the beginning of the next end step."
Followed Footsteps74%
$2.63↓#9256↑0.12↓21.0 years↓
"At the beginning of your upkeep, create a token that's a copy of enchanted creature."
Thragtusk74%
$0.27↓#8399↑0.12↓14.3 years↓
"When this creature leaves the battlefield, create a 3/3 green Beast creature token."
Tombstone Stairwell74%
$53.32↑#9459↑0.50↑30.0 years↑
"At the beginning of each end step and when this enchantment leaves the battlefield, destroy all tokens created with this enchantment. They can't be regenerated."
+1 more matching line
Octomancer74%
$0.29↓#4620↑0.20↓2.2 years↓
"At the beginning of each end step, create a token that's a copy of target creature token that entered the battlefield this turn."
Featherbrained Filcher74%
$0.11↓#211720.18↓0.6 years↓
"When this creature leaves the battlefield, create a Food token."
City Pigeon74%
$0.17↓#13174↑0.07↓1.1 years↓
"When this creature leaves the battlefield, create a Food token."