Night of Souls' Betrayal 
Legendary Enchantment
$2.02 #10440 0.91 21.9 years
All creatures get -1/-1.
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Kaervek, the Spiteful100%
$0.28↓#99990.38↓6.2 years↓
"Other creatures get -1/-1."
Nausea98%
$0.03↓#17556↓0.00↓28.2 years↑
"All creatures get -1/-1 until end of turn."
Shrivel98%
$0.10↓#18243↓0.24↓16.4 years↓
"All creatures get -1/-1 until end of turn."
Infest98%
$0.13↓#21635↓0.05↓23.9 years↑
"All creatures get -2/-2 until end of turn."
Languish98%
$0.34↓#5680↑0.19↓11.1 years↓
"All creatures get -4/-4 until end of turn."
Toxic Deluge96%
$4.49↑#67↑0.8712.8 years↓
"All creatures get -X/-X until end of turn."
Hideous Laughter92%
$0.20↓#25202↓0.30↓21.9 years
"All creatures get -2/-2 until end of turn."
Blight Grenade91%
$0.38↓#122130.05↓3.9 years↓
"All creatures get -3/-3 until end of turn."
Final Revels91%
$0.16↓#31154↓0.06↓18.9 years↓
"• All creatures get -0/-2 until end of turn."
Flowstone Slide90%
$0.15↓#27736↓0.29↓26.6 years↑
"All creatures get +X/-X until end of turn."
Planar Despair90%
$0.16↓#29423↓0.12↓25.3 years↑
"All creatures get -1/-1 until end of turn for each basic land type among lands you control."
Drag to the Bottom90%
$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."
Withering Curse88%
$1.38↓#105340.00↓0.4 years↓
"All creatures get -2/-2 until end of turn."
Hazardous Conditions88%
$0.05↓#28718↓0.38↓9.9 years↓
"Creatures with no counters on them get -2/-2 until end of turn."
Dread of Night87%
$0.39↓#26533↓0.24↓28.9 years↑
"White creatures get -1/-1."
Stronghold Taskmaster87%
$0.23↓#29060↓0.00↓28.5 years↑
"Other black creatures get -1/-1."
Urborg Shambler87%
$0.32↓#29571↓0.22↓25.9 years↑
"Other black creatures get -1/-1."
Mephitic Vapors86%
$0.11↓#20591↓0.36↓7.9 years↓
"All creatures get -1/-1 until end of turn."
Biting Rain86%
$0.12↓#15523↓0.38↓10.4 years↓
"All creatures get -2/-2 until end of turn."
Darkness Descends86%
$0.27↓#104020.00↓0.6 years↓
"Put two -1/-1 counters on each creature."