Hazardous Conditions 
Sorcery
$0.05 #28718 0.38 9.9 years
Creatures with no counters on them get -2/-2 until end of turn.
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Infest90%
$0.13↑#21635↑0.05↓23.9 years↑
"All creatures get -2/-2 until end of turn."
Languish90%
$0.34↑#5680↑0.19↓11.1 years↑
"All creatures get -4/-4 until end of turn."
Blight Grenade90%
$0.38↑#12213↑0.05↓3.9 years↓
"All creatures get -3/-3 until end of turn."
Nausea90%
$0.03↓#17556↑0.00↓28.2 years↑
"All creatures get -1/-1 until end of turn."
Shrivel90%
$0.10↑#18243↑0.24↓16.4 years↑
"All creatures get -1/-1 until end of turn."
Darkness Descends88%
$0.27↑#10402↑0.00↓0.6 years↓
"Put two -1/-1 counters on each creature."
Kaervek, the Spiteful88%
$0.28↑#9999↑0.386.2 years↓
"Other creatures get -1/-1."
Night of Souls' Betrayal88%
$2.02↑#10440↑0.91↑21.9 years↑
"All creatures get -1/-1."
Planar Despair88%
$0.16↑#294230.12↓25.3 years↑
"All creatures get -1/-1 until end of turn for each basic land type among lands you control."
Toxic Deluge87%
$4.49↑#67↑0.87↑12.8 years↑
"All creatures get -X/-X until end of turn."
Mephitic Vapors84%
$0.11↑#20591↑0.367.9 years↓
"All creatures get -1/-1 until end of turn."
Harbinger of Night84%
$28.20↑#14222↑0.50↑29.9 years↑
"At the beginning of your upkeep, put a -1/-1 counter on each creature."
Holy Light84%
$2.43↑#293270.2932.1 years↑
"Nonwhite creatures get -1/-1 until end of turn."
Soul Snuffers84%
$0.27↑#5038↑0.21↓18.1 years↑
"When this creature enters, put a -1/-1 counter on each creature."
Drag to the Bottom84%
$0.06↑#21276↑0.07↓4.0 years↓
"Each creature gets -X/-X until end of turn, where X is 1 plus the number of basic land types among lands you control."
Cower in Fear84%
$0.14↑#15508↑0.16↓14.1 years↑
"Creatures your opponents control get -1/-1 until end of turn."
Make Obsolete84%
$0.12↑#15167↑0.12↓9.9 years
"Creatures your opponents control get -1/-1 until end of turn."
Stench of Decay84%
$0.11↑#298230.07↓30.2 years↑
"Nonartifact creatures get -1/-1 until end of turn."
Death's-Head Buzzard84%
$0.09↑#22498↑0.56↑23.3 years↑
"When this creature dies, all creatures get -1/-1 until end of turn."
Havoc Demon84%
$0.14↑#21730↑0.20↓23.6 years↑
"When this creature dies, all creatures get -5/-5 until end of turn."