Gloom Ripper 
Creature — Elf Assassin
$0.27 #11933 0.00 0.6 years
When this creature enters, target creature you control gets +X/+0 until end of turn and up to one target creature an opponent controls gets -0/-X until end of turn, where X is the number of Elves you control plus the number of Elf cards in your graveyard.
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Cards similar to Gloom Ripper expected a card that isn't here?
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Gurmag Rakshasa86%
$0.10↓#21608↓0.061.4 years
"When this creature enters, target creature an opponent controls gets -2/-2 until end of turn and target creature you control gets +2/+2 until end of turn."
Monoist Circuit-Feeder84%
$0.13↓#21143↓0.24↑1.1 years
"When this creature enters, until end of turn, target creature you control gets +X/+0 and target creature an opponent controls gets -0/-X, where X is the number of artifacts you control."
Skulduggery84%
$0.06↓#19539↓0.36↑8.9 years↑
"Until end of turn, target creature you control gets +1/+1 and target creature an opponent controls gets -1/-1."
Steal Strength80%
$0.10↓#30502↓0.29↑26.3 years↑
"Target creature gets +1/+1 until end of turn. Another target creature gets -1/-1 until end of turn."
Leeching Bite79%
$0.09↓#30271↓0.21↑15.3 years↑
"Target creature gets +1/+1 until end of turn. Another target creature gets -1/-1 until end of turn."
Consume Strength78%
$0.13↓#27438↓0.18↑25.3 years↑
"Target creature gets +2/+2 until end of turn. Another target creature gets -2/-2 until end of turn."
Rites of Reaping78%
$0.07↓#30365↓0.55↑13.9 years↑
"Target creature gets +3/+3 until end of turn. Another target creature gets -3/-3 until end of turn."
Thornmantle Striker76%
$0.21↓#22530↓0.41↑5.6 years↑
"• Target creature an opponent controls gets -X/-X until end of turn, where X is the number of Elves you control."
Dissection Practice72%
$0.24↓#17343↓0.000.4 years
"Up to one target creature gets -1/-1 until end of turn."
Rookie Mistake72%
$0.04↓#28286↓0.006.2 years↑
"Until end of turn, target creature gets +0/+2 and another target creature gets -2/-0."
Schismotivate72%
$0.36↑#25964↓0.19↑20.6 years↑
"Target creature gets +4/+0 until end of turn. Another target creature gets -4/-0 until end of turn."
Festive Funeral71%
$0.15↓#25718↓0.24↑6.9 years↑
"Target creature gets -X/-X until end of turn, where X is the number of cards in your graveyard."
Shaman of the Pack71%
$0.44↑#4518↑0.30↑11.1 years↑
"When this creature enters, target opponent loses life equal to the number of Elves you control."
Eyeblight Massacre71%
$0.10↓#120630.53↑11.1 years↑
"Non-Elf creatures get -2/-2 until end of turn."
Azula Always Lies71%
$0.15↓#107800.000.8 years
"• Target creature gets -1/-1 until end of turn."
Borrowed Malevolence70%
$0.06↓#27457↓0.21↑10.1 years↑
"• Target creature gets +1/+1 until end of turn."
Lys Alana Scarblade70%
$0.21↓#135640.31↑18.9 years↑
"
, Discard an Elf card: Target creature gets -X/-X until end of turn, where X is the number of Elves you control."
, Discard an Elf card: Target creature gets -X/-X until end of turn, where X is the number of Elves you control."
Subtle Strike70%
$0.05↓#19759↓0.19↑9.9 years↑
"• Target creature gets -1/-1 until end of turn."
Cartouche of Ambition70%
$0.14↓#15437↓0.069.4 years↑
"When this Aura enters, you may put a -1/-1 counter on target creature."