Sylvan Primordial is a rare Creature — Avatar card from Gatecrash (GTC), collector number 136. Current market price: $1.98 (foil $21.38), TCGplayer market prices via Scryfall.
Reach When this creature enters, for each opponent, destroy target noncreature permanent that player controls. Search your library for up to X Forest cards, where X is the number of permanents destroyed this way, put those cards onto the battlefield tapped, then shuffle.