Your search for "plains 543" revealed the following:
Plains (543) - Jumpstart Lands (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Donato Giancola Card Text: Foil Jumpstart LandsW
Officer (013) // New Planet Token (TTRK) from Star Trek, available at 401 Games Canada. Rarity: Token Finish: Normal Artist: Gregg Schigiel & David Frasheski Card Text:New Planet: {T}: Add one mana of any color.
Plains - Judge Gift Cards 2014 (Foil) (J14) from Judge Gift Cards 2014, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Terese Nielsen