Surge Conductor 
Artifact Creature — Robot
$0.36 #2751 0.37 1.1 years
Whenever another nontoken artifact you control enters, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
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Metastatic Evangel86%
$0.37↑#1514↑0.332.2 years↑
"Whenever another nontoken creature you control enters, proliferate."
Machinesmith Automaton84%
$0.17↓#17896↓0.00↓0.2 years
"Whenever another artifact you control enters, put a +1/+1 counter on this creature."
Towashi Songshaper84%
$0.10↓#25896↓0.00↓4.5 years↑
"Whenever another artifact you control enters, this creature gets +1/+0 until end of turn."
Perimeter Patrol84%
$0.04↓#30426↓0.00↓3.8 years↑
"Whenever an artifact you control enters, this creature gets +1/+0 until end of turn."
Phalanx Vanguard84%
$0.04↓#27045↓0.273.8 years↑
"Whenever an artifact you control enters, this creature gets +1/+0 until end of turn."
Donatello, Way with Machines83%
$0.21↓#13634↓0.00↓0.5 years
"Whenever an artifact you control enters, put a +1/+1 counter on this card."
Glaze Fiend83%
$0.17↓#24361↓0.00↓17.9 years↑
"Whenever another artifact you control enters, this creature gets +2/+2 until end of turn."
Yotian Dissident82%
$0.25↓#9912↓0.293.8 years↑
"Whenever an artifact you control enters, put a +1/+1 counter on target creature you control."
Karstoderm82%
$0.05↓#31823↓0.3522.6 years↑
"Whenever an artifact enters, remove a +1/+1 counter from this creature."
Oreplate Pangolin82%
$0.14↓#16597↓0.12↓1.1 years
"Whenever another artifact you control enters, you may pay 
. If you do, put a +1/+1 counter on this creature."
. If you do, put a +1/+1 counter on this creature."
Mm'menon, Uthros Exile80%
$0.25↓#9317↓0.06↓1.1 years
"Whenever an artifact you control enters, put a +1/+1 counter on target creature."
Mandible Justiciar80%
$0.18↓#16734↓0.24↓3.6 years↑
"Whenever another artifact you control enters, this creature gets +1/+1 until end of turn."
Mechan Assembler80%
$0.28↓#10210↓0.16↓1.1 years
"Whenever another artifact you control enters, create a 2/2 colorless Robot artifact creature token. This ability triggers only once each turn."
Tidus, Blitzball Star78%
$0.18↓#12782↓0.381.2 years
"Whenever an artifact you control enters, put a +1/+1 counter on this card."
Atraxa, Praetors' Voice78%
$24.32↑#24751.72↑9.8 years↑
"At the beginning of your end step, proliferate."
Ingenious Smith78%
$0.16↓#13239↓0.00↓5.1 years↑
"Whenever one or more artifacts you control enter, put a +1/+1 counter on this creature. This ability triggers only once each turn."
Fateful Discovery77%
$5.99↑#13444↓0.00↓0.1 years↓
"Whenever an artifact you control enters, draw a card."
Tainted Observer76%
$0.22↓#7047↓0.473.6 years↑
"Whenever another creature you control enters, you may pay 
. If you do, proliferate."
. If you do, proliferate."
Dragonspark Reactor76%
$0.32↓#9054↓0.00↓4.5 years↑
"Whenever this artifact or another artifact you control enters, put a charge counter on this artifact."
Evolution Sage76%
$2.58↑#405↑0.457.3 years↑
"Whenever a land you control enters, proliferate."