Boulderborn Dragon is a common Artifact Creature — Dragon card from Tarkir: Dragonstorm (TDM), collector number 239. Current market price: $0.16 (foil $0.24), TCGplayer market prices via Scryfall.
Flying, vigilance Whenever this creature attacks, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)