Ultron's Auxiliary 
Artifact Creature — Robot Villain
$0.93 #20051 0.00 0.2 years
Menace
Whenever another artifact is put into your graveyard from the battlefield or an artifact card is put into your graveyard from anywhere other than the battlefield, put a +1/+1 counter on this creature.
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Moriok Rigger94%
$0.50↓#239810.0622.3 years↑
"Whenever an artifact is put into a graveyard from the battlefield, you may put a +1/+1 counter on this creature."
Judge Magister Gabranth92%
$0.17↓#9191↑0.27↑1.2 years↑
"Whenever another creature or artifact you control dies, put a +1/+1 counter on this card."
+1 more matching line
Deep Goblin Skulltaker88%
$0.18↓#186870.002.8 years↑
"Menace"
Blackbloom Rogue // Blackbloom Bog86%
$0.10↓#8714↑0.085.9 years↑
"Menace"
Molder Beast84%
$0.05↓#26992↓0.0015.9 years↑
"Whenever an artifact is put into a graveyard from the battlefield, this creature gets +2/+0 until end of turn."
Sengir Connoisseur83%
$0.21↓#203600.004.0 years↑
"Whenever one or more other creatures die, put a +1/+1 counter on this creature. This ability triggers only once each turn."
Scavenger Drake83%
$0.18↓#222330.40↑17.9 years↑
"Whenever another creature dies, you may put a +1/+1 counter on this creature."
Swarm of Bloodflies83%
$0.09↓#13737↑0.50↑11.9 years↑
"Whenever another creature dies, put a +1/+1 counter on this creature."
Guardian Kirin83%
$0.11↓#24342↓0.50↑5.2 years↑
"Whenever another creature you control dies, put a +1/+1 counter on this creature."
Stormblood Berserker83%
$0.05↓#239360.0015.1 years↑
"Menace"
Algae Gharial82%
$0.13↓#219150.0517.9 years↑
"Whenever another creature dies, you may put a +1/+1 counter on this creature."
Rockslide Elemental82%
$0.15↓#239660.47↑17.9 years↑
"Whenever another creature dies, you may put a +1/+1 counter on this creature."
Vengeful Townsfolk82%
$0.12↓#203670.33↑2.4 years↑
"Whenever one or more other creatures you control die, put a +1/+1 counter on this creature."
Rot Shambler82%
$0.17↓#13578↑0.0010.9 years↑
"Whenever another creature you control dies, put a +1/+1 counter on this creature."
Unruly Mob82%
$0.08↓#178580.0014.9 years↑
"Whenever another creature you control dies, put a +1/+1 counter on this creature."
Gavony Unhallowed82%
$0.08↓#197170.87↑10.1 years↑
"Whenever another creature you control dies, put a +1/+1 counter on this creature."
Lumberknot81%
$0.11↓#15284↑0.25↑14.9 years↑
"Whenever a creature dies, put a +1/+1 counter on this creature."
Moonshadow80%
$12.60↑#8447↑0.000.6 years
"Menace"
Tenured Oilcaster80%
$0.13↓#234230.60↑3.4 years↑
"Menace"
Ultron the Annihilator80%
$20.38↑#13805↑0.000.2 years
"Whenever another artifact is put into your graveyard from the battlefield or an artifact card is put into your graveyard from anywhere other than the battlefield, each opponent loses 1 life."