Mindless Automaton is a uncommon Artifact Creature — Construct card from Eternal Masters (EMA), collector number 227. Current market price: $0.17 (foil $0.35), TCGplayer market prices via Scryfall.
This creature enters with two +1/+1 counters on it. {1}, Discard a card: Put a +1/+1 counter on this creature. Remove two +1/+1 counters from this creature: Draw a card.