Wall of Mourning 
Creature — Wall
$0.24 #18671 0.15 5.1 years
Defender
When this creature enters, exile a card from the top of your library face down for each opponent you have.
Coven — At the beginning of your end step, if you control three or more creatures with different powers, put a card exiled with this creature into its owner's hand.
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Cards similar to Wall of Mourning expected a card that isn't here?
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$0.35↑#27002↓0.0629.5 years↑
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Steel Wall85%
$0.25↑#10348↑0.00↓23.0 years↑
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Tundra Wall85%
$0.18↓#25490↓0.04↓0.9 years↓
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$0.10↓#14349↑0.00↓10.1 years↑
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Blistering Barrier85%
$0.12↓#28532↓0.0630.0 years↑
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Ogre Sentry85%
$0.06↓#30753↓0.2016.5 years↑
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Wall of Mist85%
$0.12↓#158490.068.3 years↑
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Archers of Qarsi85%
$0.05↓#25843↓0.00↓11.7 years↑
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Wall of Wood85%
$0.10↓#24479↓0.00↓33.2 years↑
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Wall of Earth85%
$0.40↑#26274↓0.00↓32.4 years↑
"Defender"
Glacial Wall85%
$0.30↑#11363↑0.2431.4 years↑
"Defender"
Guardians of Meletis85%
$0.07↓#165210.00↓13.1 years↑
"Defender"