Your search for "swamp 439" revealed the following:
Swamp (js439) (WC97) (Jakub Šlemr) from World Championship Decks 1997, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Andrew Robinson Card Text:T: Add B to your mana pool.Not a Tournament Legal card.
Swamp (343) (C16) from Commander 2016, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Rebecca Guay
Swamp (344) (C16) from Commander 2016, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Mark Poole
Swamp (313) (40K) from Warhammer 40,000 Commander, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Andrey Nyarl
Swamp (314) (40K) from Warhammer 40,000 Commander, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Kamila Szutenberg
Swamp - Art Series (Gold-Stamped Signature) (ATMT) from Teenage Mutant Ninja Turtles Art Series, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Gaboleps
Swamp (1947) - Flower Power (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Ashley Dreyfus Card Text: Flower Power
Swamp (1384) - Featuring: Gary Baseman (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Gary Baseman Card Text: Featuring: Gary Baseman
Swamp (327) (C14) from Commander 2014, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Véronique Meignaud
Swamp (328) (C14) from Commander 2014, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jung Park
Swamp (439) (5ED) from Fifth Edition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Andrew Robinson Card Text:T: Add B to your mana pool.
Swamp (539) - Artist Series: Seb McKinnon (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Seb McKinnon Card Text: Artist Series: Seb McKinnon(T: Add B.)
Swamp (417) - Shades Not Included (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Ben Schnuck Card Text: Shades Not Included
Swamp (326) (C14) from Commander 2014, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: John Avon