Magnetic Snuffler is a uncommon Artifact Creature — Construct card from Murders at Karlov Manor (MKM), collector number 376. Current market price: $0.12 (foil $0.12), TCGplayer market prices via Scryfall.
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.