Thornvault Forager is a rare Creature — Squirrel Ranger card from Bloomburrow Promos (PBLB), collector number 197p. Current market price: $3.61 (foil $2.38), TCGplayer market prices via Scryfall.
{T}: Add {G}. {T}, Forage: Add two mana in any combination of colors. (To forage, exile three cards from your graveyard or sacrifice a Food.) {3}{G}, {T}: Search your library for a Squirrel card, reveal it, put it into your hand, then shuffle.