Smaug, Wicked Worm is a rare Legendary Creature — Dragon card from The Hobbit (HOB), collector number 245. Current market price: $6.85 (foil $11.74), TCGplayer market prices via Scryfall.
Flying When Smaug enters, create X tapped Treasure tokens, where X is the number of artifacts your opponents control. Whenever you cast a spell, if mana from a Treasure was spent to cast it, you draw a card and lose 1 life.