Stench of Decay 
Instant
$0.12 #30107 0.31 30.4 years
Nonartifact creatures get -1/-1 until end of turn.
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The Flesh Is Weak84%
$0.37↑#15907↑0.12↓4.0 years↓
"Nonartifact creatures get -1/-1."
Infest83%
$0.10↓#21931↑0.07↓24.0 years↓
"All creatures get -2/-2 until end of turn."
Nausea83%
$0.03↓#18163↑0.06↓28.3 years↓
"All creatures get -1/-1 until end of turn."
Shrivel83%
$0.10↓#18854↑0.07↓16.5 years↓
"All creatures get -1/-1 until end of turn."
Languish83%
$0.35↑#5753↑0.2611.3 years↓
"All creatures get -4/-4 until end of turn."
Blight Grenade82%
$0.39↑#12533↑0.324.0 years↓
"All creatures get -3/-3 until end of turn."
Hazardous Conditions82%
$0.06↓#289960.4010.1 years↓
"Creatures with no counters on them get -2/-2 until end of turn."
Planar Despair82%
$0.18↑#298710.2225.4 years↓
"All creatures get -1/-1 until end of turn for each basic land type among lands you control."
Make Obsolete81%
$0.14↑#15749↑0.2210.1 years↓
"Creatures your opponents control get -1/-1 until end of turn."
Cower in Fear81%
$0.15↑#16060↑0.05↓14.3 years↓
"Creatures your opponents control get -1/-1 until end of turn."
Harvester of Misery80%
$1.16↑#14939↑0.11↓2.5 years↓
"When this creature enters, other creatures get -2/-2 until end of turn."
Holy Light80%
$2.40↑#296280.12↓32.2 years↑
"Nonwhite creatures get -1/-1 until end of turn."
Kaervek, the Spiteful80%
$0.29↑#10369↑0.58↑6.3 years↓
"Other creatures get -1/-1."
Night of Souls' Betrayal80%
$2.01↑#10844↑0.60↑22.1 years↓
"All creatures get -1/-1."
Toxic Deluge78%
$5.07↑#66↑0.81↑13.0 years↓
"All creatures get -X/-X until end of turn."
Mephitic Vapors78%
$0.11↓#21206↑0.00↓8.0 years↓
"All creatures get -1/-1 until end of turn."
Golgari Charm77%
$0.82↑#1622↑0.21↓14.0 years↓
"• All creatures get -1/-1 until end of turn."
Suffocating Fumes76%
$0.20↑#15331↑0.06↓6.5 years↓
"Creatures your opponents control get -1/-1 until end of turn."
Festergloom76%
$0.05↓#23332↑0.2412.3 years↓
"Nonblack creatures get -1/-1 until end of turn."
Rollick of Abandon76%
$0.03↓#300020.2712.5 years↓
"All creatures get +2/-2 until end of turn."