Hermitic Herbalist is a uncommon Creature — Human Druid Ally card from Avatar: The Last Airbender (TLA), collector number 226. Current market price: $0.24 (foil $0.28), TCGplayer market prices via Scryfall.
{T}: Add one mana of any color. {T}: Add two mana in any combination of colors. Spend this mana only to cast Lesson spells.