Monoist Circuit-Feeder 
Artifact Creature — Nautilus
$0.14 #21129 0.05 1.2 years
Flying
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.
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Gurmag Rakshasa94%
$0.11↓#217660.061.5 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."
Skulduggery90%
$0.05↓#199250.009.1 years↑
"Until end of turn, target creature you control gets +1/+1 and target creature an opponent controls gets -1/-1."
Steal Strength89%
$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 Bite88%
$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 Strength88%
$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 Reaping88%
$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."
Irradiate85%
$0.04↓#27914↓0.1323.0 years↑
"Target creature gets -1/-1 until end of turn for each artifact you control."
Rookie Mistake82%
$0.06↓#28544↓0.006.3 years↑
"Until end of turn, target creature gets +0/+2 and another target creature gets -2/-0."
Schismotivate82%
$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."
Filigree Angel82%
$0.24↑#15101↑0.53↑17.5 years↑
"Flying"
Gloom Ripper82%
$0.23↑#11726↑0.080.7 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."
Dissection Practice82%
$0.22↑#16764↑0.030.5 years
"Up to one target creature gets -1/-1 until end of turn."
Miasma Demon81%
$0.19↑#199470.052.1 years
"Flying"
Subtle Strike79%
$0.06↓#199050.0010.1 years↑
"• Target creature gets -1/-1 until end of turn."
Azula Always Lies79%
$0.14#10722↑0.110.9 years
"• Target creature gets -1/-1 until end of turn."
Borrowed Malevolence78%
$0.04↓#27690↓0.1210.2 years↑
"• Target creature gets -1/-1 until end of turn."
Cartouche of Ambition77%
$0.14#15685↑0.25↑9.5 years↑
"When this Aura enters, you may put a -1/-1 counter on target creature."
Shefet Archfiend76%
$0.24↑#16118↑0.33↑1.7 years
"Flying"
Gadrak, the Crown-Scourge76%
$0.35↑#3886↑0.126.3 years↑
"Flying"
Keening Banshee76%
$0.12↓#27674↓0.1321.2 years↑
"When this creature enters, target creature gets -2/-2 until end of turn."