Your search for "plains 324" revealed the following:
Plains (324) (C15) from Commander 2015, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Nils Hamm
Plains (344) (Foil) (7ED) from Seventh Edition, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: John Avon
Plains (004) (PALP) from Asia Pacific Land Program, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Ron Spears Card Text:T: Add W to your mana pool.