Magnetic Snuffler 
Artifact Creature — Construct
When this creature enters, return target Equipment card from your graveyard to the battlefield attached to this creature.
Whenever you sacrifice an artifact, put a +1/+1 counter on this creature.
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Cards that do something similar expected a card that isn't here?
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Gleaming Geardrake 100%
$0.22#9615
"Whenever you sacrifice an artifact, put a +1/+1 counter on this creature."
Auriok Survivors 87%
$0.17#27311
"When this creature enters, you may return target Equipment card from your graveyard to the battlefield. If you do, you may attach it to this creature."
Ravenous Squirrel 85%
$0.32#2800
"Whenever you sacrifice an artifact or creature, put a +1/+1 counter on this creature."
Syndicate Trafficker 83%
$0.23#23165
"{1}, Sacrifice an artifact: Put a +1/+1 counter on this creature. It gains indestructible until end of turn."
Patchwork Automaton 81%
$0.37#7060
"Whenever you cast an artifact spell, put a +1/+1 counter on this creature."
Threefold Thunderhulk 81%
$0.31#1810
"{2}, Sacrifice another artifact: Put a +1/+1 counter on this creature."