Call for Blood 
Instant — Arcane
$0.06 #29047 0.35 21.6 years
As an additional cost to cast this spell, sacrifice a creature.
Target creature gets -X/-X until end of turn, where X is the sacrificed creature's power.
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Tormented Thoughts92%
$0.08↑#23080↑0.60↑12.3 years↓
"As an additional cost to cast this spell, sacrifice a creature."
Tend the Pests91%
$0.62↑#5253↑0.19↓5.4 years↓
"As an additional cost to cast this spell, sacrifice a creature."
Ichor Explosion90%
$0.11↑#281360.2715.3 years↓
"All creatures get -X/-X until end of turn, where X is the sacrificed creature's power."
+1 more matching line
Bone Splinters89%
$0.03↓#5966↑0.55↑17.9 years↓
"As an additional cost to cast this spell, sacrifice a creature."
Life's Legacy86%
$4.96↑#2522↑0.3412.1 years↓
"As an additional cost to cast this spell, sacrifice a creature."
Vicious Betrayal86%
$0.19↑#287720.2522.3 years
"As an additional cost to cast this spell, sacrifice any number of creatures."
Death Wind86%
$0.07↑#17164↑0.56↑14.3 years↓
"Target creature gets -X/-X until end of turn."
Launch Party86%
$0.09↑#262160.06↓13.9 years↓
"As an additional cost to cast this spell, sacrifice a creature."
Eyes of the Beholder85%
$0.17↑#21301↑0.13↓5.1 years↓
"Target creature gets -11/-11 until end of turn."
Lash of the Whip85%
$0.03↓#288570.57↑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#287040.2511.9 years↓
"Target creature gets -4/-4 until end of turn."
Flatten85%
$0.05↓#283090.00↓11.4 years↓
"Target creature gets -4/-4 until end of turn."
Fatal Fumes85%
$0.02↓#293710.00↓13.3 years↓
"Target creature gets -4/-2 until end of turn."
Wring Flesh85%
$0.06#277260.00↓15.1 years↓
"Target creature gets -3/-1 until end of turn."
Tar Snare85%
$0.05↓#299070.00↓10.6 years↓
"Target creature gets -3/-2 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↑#291420.268.1 years↓
"Target creature gets -3/-3 until end of turn."
Pull Under85%
$0.12↑#301250.06↓21.9 years
"Target creature gets -5/-5 until end of turn."