Your search for "Plains 286" revealed the following:
Plains (286) (CMA) from Commander Anthology, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: John Avon
Plain Walker - Test Card (MB2) from Mystery Booster 2, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Marika Lord Card Text:PlainswalkPlaneswalkerwalk (This creature can't be blocked as long as defending player controls a planeswalker.)Whenever Plain Walker deals...
Plains (286) (LEA) from Limited Edition Alpha, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jesper Myrfors
Plains (001) - Magic Premiere Shop Promo 2006 (Foil) from Magic Premiere Shop 2006, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Daren Bader Card Text:This Magic Premiere Shop (MPS) land was only printed in Japanese