Your search for "plains 339" revealed the following:
Plains (339) (C16) from Commander 2016, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Kev Walker
Plains (339) (C13) from Commander 2013, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jung Park
Plains (334) (6ED) from Classic Sixth Edition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Fred Fields
Plains (335) (SCD) from Starter Commander Decks, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: James Paick
Plains (031) (Foil) (SLP) from Secret Lair Promo, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: John Avon
Plains (039) (DDI) from Duel Decks: Venser vs. Koth, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: James Paick