Tender Wildguide is a common Token Creature — Possum Druid card from Bloomburrow Tokens (TBLB), collector number 24. Current market price: $0.44, TCGplayer market prices via Scryfall.
{T}: Add one mana of any color. {T}: Put a +1/+1 counter on this creature. (This token's mana cost is {1}{G}.)