Phyrexian Soulgorger 
Snow Artifact Creature — Phyrexian Construct
$7.03 #5950 0.12 20.1 years
Cumulative upkeep—Sacrifice a creature. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
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"At the beginning of your upkeep, sacrifice a creature."
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"Cumulative upkeep—Sacrifice a land."
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"At the beginning of your upkeep, sacrifice a creature."
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"At the beginning of your upkeep, sacrifice a creature."
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$0.24↓#9559↓0.50↑14.3 years↓
"At the beginning of your upkeep, sacrifice a creature other than this creature."
Contamination84%
$4.94↓#7916↓1.50↑27.9 years↑
"At the beginning of your upkeep, sacrifice this enchantment unless you sacrifice a creature."
Devouring Strossus84%
$0.81↓#21181↓0.00↓25.9 years↑
"At the beginning of your upkeep, sacrifice a creature."
Smothering Abomination84%
$0.33↓#3833↑0.28↑10.9 years↓
"At the beginning of your upkeep, sacrifice a creature."
Puppet Conjurer81%
$0.10↓#28480↓0.41↑17.9 years↓
"At the beginning of your upkeep, sacrifice a Homunculus."
Daemogoth Woe-Eater80%
$0.25↓#7426↓0.59↑5.4 years↓
"At the beginning of your upkeep, sacrifice a creature."
Apocalypse Demon80%
$0.27↓#15704↓0.53↑9.1 years↓
"At the beginning of your upkeep, tap this creature unless you sacrifice another creature."
Lord of the Pit80%
$0.42↓#13006↓0.41↑33.1 years↑
"At the beginning of your upkeep, sacrifice a creature other than this creature. If you can't, this creature deals 7 damage to you."
Cosmic Larva80%
$0.36↓#19553↓0.29↑22.3 years↑
"At the beginning of your upkeep, sacrifice this creature unless you sacrifice two lands."
Balduvian Fallen80%
$0.15↓#31908↓0.27↑20.1 years
"Cumulative upkeep 
"
"
Eldrazi Monument80%
$9.42↑#1455↑0.69↑16.9 years↓
"At the beginning of your upkeep, sacrifice a creature. If you can't, sacrifice this artifact."
Painwracker Oni78%
$0.15↓#19907↓0.00↓21.9 years↑
"At the beginning of your upkeep, sacrifice a creature if you don't control an Ogre."
Desecration Elemental77%
$5.81↓#11681↓0.25↑22.3 years↑
"Whenever a player casts a spell, sacrifice a creature."
Liege of the Pit76%
$0.76↓#16604↓0.00↓19.9 years
"At the beginning of your upkeep, sacrifice a creature other than this creature. If you can't, this creature deals 7 damage to you."
Volunteer Reserves76%
$0.19↓#29407↓0.00↓29.2 years↑
"Cumulative upkeep "
"
Uktabi Efreet76%
$0.04↓#31836↓0.59↑29.2 years↑
"Cumulative upkeep 
"
"