Champions of the Shoal 
Creature — Merfolk Soldier
$0.23 #15899 0.00 0.6 years
As an additional cost to cast this spell, behold a Merfolk and exile it. (Exile a Merfolk you control or a Merfolk card from your hand.)
Whenever this creature enters or becomes tapped, tap up to one target creature and put a stun counter on it.
When this creature leaves the battlefield, return the exiled card to its owner's hand.
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Cards similar to Champions of the Shoal expected a card that isn't here?
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Champions of the Perfect90%
$1.42↑#4256↑0.000.6 years
"When this creature leaves the battlefield, return the exiled card to its owner's hand."
+1 more matching line
Champion of the Clachan88%
$0.20↓#184150.000.6 years
"When this creature leaves the battlefield, return the exiled card to its owner's hand."
+1 more matching line
Champion of the Weird88%
$0.30↑#140690.000.6 years
"When this creature leaves the battlefield, return the exiled card to its owner's hand."
+1 more matching line
Champion of the Path87%
$0.41↑#7111↑0.000.6 years
"When this creature leaves the battlefield, return the exiled card to its owner's hand."
+1 more matching line
Utrom Scientists80%
$0.13↓#22162↓0.000.5 years
"When this creature enters, tap up to one target creature and put a stun counter on it."
Rowdy Snowballers80%
$0.17↓#139930.000.8 years
"When this creature enters, tap target creature an opponent controls and put a stun counter on it."
Shipwreck Patrol80%
$0.17↓#30233↓0.000.2 years
"When this creature enters, tap target creature an opponent controls and put a stun counter on it."
Alchemax Slayer-Bots80%
$0.22↓#181290.17↑0.9 years
"When this creature enters, tap target creature an opponent controls and put a stun counter on it."
Fractal Mascot80%
$0.13↓#22595↓0.000.4 years
"When this creature enters, tap target creature an opponent controls. Put a stun counter on it."
Fear of Immobility79%
$0.11↓#170420.18↑1.9 years↑
"When this creature enters, tap up to one target creature. If an opponent controls that creature, put a stun counter on it."
Wormfang Newt79%
$0.15↓#23916↓0.22↑24.3 years↑
"When this creature leaves the battlefield, return the exiled card to the battlefield under its owner's control."
Wormfang Turtle79%
$0.18↓#24161↓0.0024.3 years↑
"When this creature leaves the battlefield, return the exiled card to the battlefield under its owner's control."
Wormfang Drake78%
$0.12↓#23561↓0.0024.3 years↑
"When this creature leaves the battlefield, return the exiled card to the battlefield under its owner's control."
Worldgorger Dragon78%
$1.53↑#5920↑0.95↑24.3 years↑
"When this creature leaves the battlefield, return the exiled cards to the battlefield under their owners' control."
Collector's Case78%
$0.16↓#27215↓0.000.2 years
"When this artifact enters, tap up to one target creature and put two stun counters on it."
Watcher for Tomorrow77%
$0.20↓#7469↑0.29↑7.2 years↑
"When this creature leaves the battlefield, put the exiled card into its owner's hand."
Gilded Scuttler76%
$0.26↑#140550.15↑1.8 years↑
"When this creature enters, tap target creature an opponent controls and put a stun counter on it."
Donatello, Rad Scientist76%
$0.38↑#189600.000.5 years
"When this card enters, tap up to three target creatures your opponents control. Put a stun counter on each of them."
Sygg's Command76%
$0.23#164860.000.6 years
"• Tap target creature. Put a stun counter on it."
+1 more matching line
Stitched Mangler76%
$0.11↓#21062↓0.18↑10.4 years↑
"When this creature enters, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step."