Foul Spirit 
Creature — Spirit
$0.52 #31970 0.05 28.3 years
Flying
When this creature enters, sacrifice a land.
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Cards similar to Foul Spirit expected a card that isn't here?
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"When this creature enters, sacrifice it unless you sacrifice three Forests."
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"At the beginning of your upkeep, sacrifice this creature unless you sacrifice two lands."
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"Cumulative upkeep—Sacrifice a land."
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"When this creature enters, you may sacrifice a creature or land. If you do, put two +1/+1 counters on this creature."
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Bog Elemental82%
$0.28↓#306810.24↑26.4 years↓
"At the beginning of your upkeep, sacrifice this creature unless you sacrifice a land."
Glacial Chasm81%
$17.09↑#2246↑2.04↑31.4 years↑
"When this land enters, sacrifice a land."
Lotus Field81%
$2.67↑#866↑0.29↑7.3 years↓
"When this land enters, sacrifice two lands."
Territorial Dispute80%
$0.43↓#290561.52↑27.0 years↓
"At the beginning of your upkeep, sacrifice this enchantment unless you sacrifice a land."
Goblin Firebug80%
$0.07↓#289710.33↑23.7 years↓
"When this creature leaves the battlefield, sacrifice a land."
Quickling80%
$0.36↓#7755↑0.0012.3 years↓
"Flying"
Raze79%
$0.85↑#21374↑0.61↑28.0 years
"As an additional cost to cast this spell, sacrifice a land."
Fighting Drake79%
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"Flying"
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"Flying"
Air Elemental79%
$0.02↓#24432↑0.27↑33.2 years↑
"Flying"
Mahamoti Djinn79%
$0.09↓#256460.0033.2 years↑
"Flying"