Defile 
Instant
$1.56 #987 0.26 7.2 years
Target creature gets -1/-1 until end of turn for each Swamp you control.
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Quag Sickness91%
$0.04↓#20488↓0.3016.1 years↑
"Enchanted creature gets -1/-1 for each Swamp you control."
Drag Down88%
$0.04↓#28940↓0.2917.6 years↑
"Target creature gets -1/-1 until end of turn for each basic land type among lands you control."
Mutilate88%
$1.25↓#2397↓0.3624.6 years↑
"All creatures get -1/-1 until end of turn for each Swamp you control."
Flatten85%
$0.05↓#28309↓0.00↓11.4 years↑
"Target creature gets -4/-4 until end of turn."
Lash of the Whip85%
$0.03↓#28857↓0.57↑12.9 years↑
"Target creature gets -4/-4 until end of turn."
Grasp of Darkness85%
$0.10↓#11433↓0.11↓15.9 years↑
"Target creature gets -4/-4 until end of turn."
Dark Deed85%
$0.21↓#18177↓0.00↓0.2 years↓
"Target creature gets -4/-4 until end of turn."
Throttle85%
$0.06↓#28704↓0.2511.9 years↑
"Target creature gets -4/-4 until end of turn."
Fatal Fumes85%
$0.02↓#29371↓0.00↓13.3 years↑
"Target creature gets -4/-2 until end of turn."
Pull Under85%
$0.12↓#30125↓0.06↓21.9 years↑
"Target creature gets -5/-5 until end of turn."
Demon's Grasp85%
$0.12↓#27189↓0.1810.9 years↑
"Target creature gets -5/-5 until end of turn."
Last Gasp85%
$0.04↓#16666↓0.2720.9 years↑
"Target creature gets -3/-3 until end of turn."
Strangling Spores85%
$0.07↓#29142↓0.268.1 years
"Target creature gets -3/-3 until end of turn."
Eyes of the Beholder85%
$0.17↓#21301↓0.13↓5.1 years↓
"Target creature gets -11/-11 until end of turn."
Death Wind85%
$0.07↓#17164↓0.56↑14.3 years↑
"Target creature gets -X/-X until end of turn."
Tar Snare85%
$0.05↓#29907↓0.00↓10.6 years↑
"Target creature gets -3/-2 until end of turn."
Wring Flesh85%
$0.06↓#27726↓0.00↓15.1 years↑
"Target creature gets -3/-1 until end of turn."
Overkill85%
$0.29↓#2180↓0.361.2 years↓
"Target creature gets -0/-9999 until end of turn."
Scorpion's Sting82%
$0.15↓#14090↓0.221.0 years↓
"Target creature gets -3/-3 until end of turn."
Gwyllion Hedge-Mage82%
$0.10↓#29019↓0.53↑18.1 years↑
"When this creature enters, if you control two or more Swamps, you may put a -1/-1 counter on target creature."