Decomposition 
Enchantment — Aura
$0.13 #30519 0.55 29.9 years
Enchant black creature
Enchanted creature has "Cumulative upkeep—Pay 1 life." (At the beginning of its controller's upkeep, that player puts an age counter on it, then sacrifices it unless they pay its upkeep cost for each age counter on it.)
When enchanted creature dies, its controller loses 2 life.
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Mana Chains88%
$0.22↑#23413↑0.41↓29.2 years
"Enchanted creature has "Cumulative upkeep .""
.""+1 more matching line
Inevitable End79%
$0.17↑#19406↑0.626.6 years↓
"Enchant creature"
+1 more matching line
Withercrown78%
$0.18↑#18890↑0.29↓5.6 years↓
"Enchanted creature has base power 0 and has "At the beginning of your upkeep, you lose 1 life unless you sacrifice this creature.""
Soul Bleed76%
$0.06↓#275500.20↓17.1 years↓
"At the beginning of the upkeep of enchanted creature's controller, that player loses 1 life."
+1 more matching line
Clawing Torment76%
$0.23↑#8551↑0.29↓4.5 years↓
"Enchanted permanent has "At the beginning of your upkeep, you lose 1 life.""
Stab Wound75%
$0.10↓#8978↑0.27↓13.9 years↓
"At the beginning of the upkeep of enchanted creature's controller, that player loses 2 life."
+1 more matching line
Pillory of the Sleepless74%
$0.11↓#18760↑0.5320.6 years↓
"Enchanted creature has "At the beginning of your upkeep, you lose 1 life.""
+1 more matching line
Morgul-Knife Wound74%
$0.16↑#14214↑0.29↓3.2 years↓
"Enchant creature"
+1 more matching line
Black Scarab73%
$0.24↑#245810.5731.3 years↑
"Enchanted creature can't be blocked by black creatures."
Pendrell Flux73%
$0.13#268870.36↓27.9 years↓
"Enchanted creature has "At the beginning of your upkeep, sacrifice this creature unless you pay its mana cost.""
Coral Net72%
$0.22↑#293190.4724.6 years↓
"Enchanted creature has "At the beginning of your upkeep, sacrifice this creature unless you discard a card.""
Relic Bane72%
$0.07↓#278410.00↓22.9 years↓
"Enchanted artifact has "At the beginning of your upkeep, you lose 2 life.""
Disruption Aura70%
$0.11↓#302080.32↓22.3 years↓
"Enchanted artifact has "At the beginning of your upkeep, sacrifice this artifact unless you pay its mana cost.""
Erosion70%
$0.09↓#274040.5332.1 years↑
"At the beginning of the upkeep of enchanted land's controller, destroy that land unless that player pays or 1 life."
or 1 life."