Your search for "Swamp 56" revealed the following:
Swamp (342) (Foil) (MMQ) from Mercadian Masques, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Terry Springer
Swamp (089) (J25) from Foundations Jumpstart, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Kasia 'Kafis' Zielińska
Swamp (333) (C15) from Commander 2015, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jonas De Ro
Swamp (340) (Foil) (MMQ) from Mercadian Masques, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Rob Alexander
Swamp (341) (SCD) from Starter Commander Decks, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jonas De Ro
Swamp (261) (Foil) (ORI) from Magic Origins, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Larry Elmore
Swamp (267) (SNC) from Streets of New Capenna, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Adam Paquette
Swamp - Full Art (282) (Foil) (BRO) from The Brothers' War, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Sergey Glushakov
Swamp (258) (WAR) from War of the Spark, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Richard Wright
Swamp (341) (8ED) from Eighth Edition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Dan Frazier
Swamp (272) (Foil) (M20) from Core Set 2020, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Jonas De Ro
Swamp (240) (Foil) (M12) from Magic 2012, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Jung Park
Swamp (281) (Foil) (ECL) from Lorwyn Eclipsed, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Raoul Vitale
Swamp (268) (IKO) from Ikoria: Lair of Behemoths, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Svetlin Velinov
Swamp (105) (DPA) from Duels of the Planeswalkers, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Alan Pollack
Swamp (382) (Foil) (ZNR) from Zendikar Rising, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Adam Paquette
Swamp (342) (MMQ) from Mercadian Masques, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Terry Springer
Swamp (343) (SCD) from Starter Commander Decks, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jung Park
Swamp (263) (ORI) from Magic Origins, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: James Paick
Swamp (268) (M21) from Core Set 2021, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Christine Choi
Swamp (105) (Foil) (ACR) from Assassin's Creed, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Wei Guan
Swamp (075) (GK1) from GRN Guild Kit, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Florian de Gesincourt
Swamp (298) (Foil) (CHK) from Champions of Kamigawa, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Jim Nelson
Swamp (260) (DOM) from Dominaria, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Dimitar Marinski
Swamp (339) (Foil) (INV) from Invasion, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Ron Spencer
Swamp (076) (DDQ) from Duel Decks: Blessed vs. Cursed, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jung Park
Swamp (1947) - Flower Power (Rainbow Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Ashley Dreyfus Card Text: Flower Power
Swamp (271) (Foil) (M19) from Core Set 2019, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Christine Choi
Swamp (288) (Foil) (NEO) from Kamigawa: Neon Dynasty, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Adam Paquette Card Text:T: Add B.
Swamp (236) (AVR) from Avacyn Restored, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: James Paick
Swamp (272) (Foil) (AFR) from Adventures in the Forgotten Realms, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Titus Lunter
Swamp (486) (MH2) from Modern Horizons 2, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Pete Venters
Swamp (328) (C14) from Commander 2014, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jung Park
Swamp (261) (M15) from Magic 2015, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jung Park
Swamp (239) (M12) from Magic 2012, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Chippy
Swamp (274) [Full Art] (ZNR) from Zendikar Rising, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Adam Paquette
Swamp (264) (CLU) from Ravnica: Clue Edition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Christopher Moeller
Swamp (341) (Foil) (8ED) from Eighth Edition, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Dan Frazier
Swamp (269) (Foil) (DMU) from Dominaria United, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Mark Poole
Swamp (270) (DMU) from Dominaria United, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Johannes Voss
Swamp (242) - Borderless (Foil) (UNF) from Unfinity, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Adam Paquette Card Text:B
Swamp (373) (10E) from Tenth Edition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Ron Spencer
Swamp (261) (Foil) (DOM) from Dominaria, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Mark Poole
Swamp (158) (P02) from Portal Second Age, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Susan Van Camp
Swamp (314) (40K) from Warhammer 40,000 Commander, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Kamila Szutenberg
Swamp (260) (RTR) from Return to Ravnica, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: John Avon
Swamp (252) (THB) from Theros Beyond Death, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Sam Burley
Swamp (297) (CM2) from Commander Anthology Volume II, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Mark Poole
Swamp (262) (Foil) (ORI) from Magic Origins, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Dan Frazier
Swamp (334) (C15) from Commander 2015, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jung Park