Beast Attack is a uncommon Instant card from Duel Decks: Garruk vs. Liliana (DDD), collector number 23. Current market price: $0.15, TCGplayer market prices via Scryfall.
Create a 4/4 green Beast creature token. Flashback {2}{G}{G}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)