Llanowar Mentor is a uncommon Creature — Elf Spellshaper card from Time Spiral Remastered (TSR), collector number 216. Current market price: $0.26 (foil $0.69), TCGplayer market prices via Scryfall.
{G}, {T}, Discard a card: Create a 1/1 green Elf Druid creature token named Llanowar Elves. It has "{T}: Add {G}."