Scuttling Doom Engine is a rare Artifact Creature — Construct card from Duel Decks: Elves vs. Inventors (DDU), collector number 61. Current market price: $0.37, 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.