Nurturing Bristleback is a common Creature — Dinosaur card from The Lost Caverns of Ixalan (LCI), collector number 203. Current market price: $0.24 (foil $0.28), TCGplayer market prices via Scryfall.
When this creature enters, create a 3/3 green Dinosaur creature token. Forestcycling {2} ({2}, Discard this card: Search your library for a Forest card, reveal it, put it into your hand, then shuffle.)