Scuttling Doom Engine is a rare Artifact Creature — Construct card from Magic 2015 (M15), collector number 229. Current market price: $0.23 (foil $1.72), TCGplayer market prices via Scryfall.
This creature can't be blocked by creatures with power 2 or less. When this creature dies, it deals 6 damage to target opponent or planeswalker.