Artificer's Dragon is a rare Artifact Creature — Dragon card from The Brothers' War (BRO), collector number 291. Current market price: $0.29 (foil $0.55), TCGplayer market prices via Scryfall.
Flying {R}: Artifact creatures you control get +1/+0 until end of turn. Unearth {3}{R}{R} ({3}{R}{R}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)