Teferi's Wavecaster [Foil] appears in Magic: The Gathering's Core Set 2021 and is listed with an Unknown rarity. The foil treatment can interest collectors seeking visual variants, though its current market value is $0.00, indicating limited recent demand or no recorded sales. Its status is useful for collection inventories assessing foil holdings from M21. Condition and grading would be the primary drivers if a sale emerges.