Gloom Ripper 
Creature — Elf Assassin
$0.23 #11726 0.08 0.7 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%
$0.11↓#21766↓0.061.5 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."
Skulduggery84%
$0.05↓#19925↓0.009.1 years↑
"Until end of turn, target creature you control gets +1/+1 and target creature an opponent controls gets -1/-1."
Monoist Circuit-Feeder82%
$0.14↓#21129↓0.051.2 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."
Steal Strength81%
$0.12↓#30791↓0.0526.4 years↑
"Target creature gets +1/+1 until end of turn. Another target creature gets -1/-1 until end of turn."
Leeching Bite79%
$0.09↓#30673↓0.0515.4 years↑
"Target creature gets +1/+1 until end of turn. Another target creature gets -1/-1 until end of turn."
Consume Strength78%
$0.14↓#27711↓0.0025.4 years↑
"Target creature gets +2/+2 until end of turn. Another target creature gets -2/-2 until end of turn."
Rites of Reaping78%
$0.08↓#30543↓0.0014.0 years↑
"Target creature gets +3/+3 until end of turn. Another target creature gets -3/-3 until end of turn."
Thornmantle Striker76%
$0.21↓#22807↓0.065.7 years↑
"• Target creature an opponent controls gets -X/-X until end of turn, where X is the number of Elves you control."
Dissection Practice73%
$0.22↓#16764↓0.030.5 years
"Up to one target creature gets -1/-1 until end of turn."
Rookie Mistake72%
$0.06↓#28544↓0.006.3 years↑
"Until end of turn, target creature gets +0/+2 and another target creature gets -2/-0."
Schismotivate72%
$0.35↑#26270↓0.0720.7 years↑
"Target creature gets +4/+0 until end of turn. Another target creature gets -4/-0 until end of turn."
Festive Funeral71%
$0.14↓#25987↓0.007.0 years↑
"Target creature gets -X/-X until end of turn, where X is the number of cards in your graveyard."
Shaman of the Pack71%
$0.35↑#4559↑0.39↑11.3 years↑
"When this creature enters, target opponent loses life equal to the number of Elves you control."
Eyeblight Massacre71%
$0.10↓#123070.53↑11.3 years↑
"Non-Elf creatures get -2/-2 until end of turn."
Lys Alana Scarblade70%
$0.22↓#136940.62↑19.0 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."
Borrowed Malevolence70%
$0.04↓#27690↓0.1210.2 years↑
"• Target creature gets +1/+1 until end of turn."
Subtle Strike70%
$0.06↓#19905↓0.0010.1 years↑
"• Target creature gets -1/-1 until end of turn."
Azula Always Lies70%
$0.14↓#107220.110.9 years
"• Target creature gets -1/-1 until end of turn."
Cartouche of Ambition70%
$0.14↓#15685↓0.25↑9.5 years↑
"When this Aura enters, you may put a -1/-1 counter on target creature."