Call of the Herd is a rare Sorcery card from Modern Masters 2017 (MM3), collector number 121. Current market price: $0.35 (foil $0.40), TCGplayer market prices via Scryfall.
Create a 3/3 green Elephant creature token. Flashback {3}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)