Roar of the Wurm is a uncommon Sorcery card from Eternal Masters (EMA), collector number 182. Current market price: $0.32 (foil $0.30), TCGplayer market prices via Scryfall.
Create a 6/6 green Wurm creature token. Flashback {3}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)