Roxanne, Starfall Savant is a rare Legendary Creature — Cat Druid card from Outlaws of Thunder Junction (OTJ), collector number 228. Current market price: $3.52 (foil $4.97), TCGplayer market prices via Scryfall.
Whenever Roxanne enters or attacks, create a tapped colorless artifact token named Meteorite with "When this token enters, it deals 2 damage to any target" and "{T}: Add one mana of any color." Whenever you tap an artifact token for mana, add one mana of any type that artifact token produced.