Your search for "Swamp 355" revealed the following:
Swamp (we342) (WC03) (Wolfgang Eder) from World Championship Decks 2003, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Larry Elmore Card Text:BNot a Tournament Legal card.
Swamp (033) (DDE) from Duel Decks: Phyrexia vs. the Coalition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Rob Alexander
Swamp (033) (SLP) from Secret Lair Promo, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: John Avon
Swamp (1952) - Marvel's Spider-Man: Mana Symbiote (Raised Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Pedro Potier Card Text: Marvel's Spider-Man: Mana Symbiote
Swamp (059) (DDC) from Duel Decks: Divine vs. Demonic, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Mark Tedin
Swamp (326) (C14) from Commander 2014, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: John Avon
Swamp (890) - Deceptive Districts (Rainbow Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Alexander Khabbazi
Swamp (081) - Art Series (Gold-Stamped Signature) (ANEO) from Neon Dynasty Art Series, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Maiko Aoji
Swamp (015) (PELP) from European Land Program, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Mike Ploog
Swamp (348) (Foil) (7ED) from Seventh Edition, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Larry Elmore
Swamp (295) (LEB) from Limited Edition Beta, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Dan Frazier Card Text:Tap to add B to your mana pool.
Swamp (296) (CEI) from Intl. Collectors’ Edition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Dan Frazier Card Text:(This card has square corners and a gold bordered back. Not tournament legal.)Tap to add B to your mana pool....
Swamp (048) - The Tokyo Lands - Japanese (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Mr. Misang Card Text: The Tokyo Lands
Swamp (1654) - Brain Dead: Lands (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Hank Reavis Card Text: Featuring: Andrew MacLean