Your search for "swamp 343" revealed the following:
Swamp (343) (C16) from Commander 2016, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Rebecca Guay
Swamp (343) (SCD) from Starter Commander Decks, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jung Park
Swamp (034) (BRC) from The Brothers' War Commander, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Robin Olausson
Swamp (346) (C13) from Commander 2013, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jonas De Ro
Swamp (143) (ARC) from Archenemy, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Susan Van Camp
Swamp (344) (SCD) from Starter Commander Decks, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Mark Poole
Swamp (374) (BLB) from Bloomburrow, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Thomas Stoop
Swamp (273) (BRO) from The Brothers' War, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Robin Olausson
Swamp (347) (C13) from Commander 2013, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jung Park
Swamp (344) (C16) from Commander 2016, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Mark Poole
Swamp (345) (C13) from Commander 2013, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Mike Bierek
Swamp (313) (Surge Foil) (40K) from Warhammer 40,000 Commander, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Andrey Nyarl
Swamp - Full Art (283) (BRO) from The Brothers' War, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Robin Olausson
Swamp (374) (Foil) (BLB) from Bloomburrow, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Thomas Stoop
Swamp (313) (40K) from Warhammer 40,000 Commander, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Andrey Nyarl
Swamp (033) (BRC) from The Brothers' War Commander, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Sam Burley
Swamp (348) (C13) from Commander 2013, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Andreas Rocha
Swamp (349) (7ED) from Seventh Edition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Tony Szczudlo
Swamp (373) (BLB) from Bloomburrow, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Piotr Dura
Swamp (346) (7ED) from Seventh Edition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: D. J. Cleland-Hura
Swamp (143) (PCA) from Planechase Anthology, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jim Nelson
Swamp (314) (40K) from Warhammer 40,000 Commander, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Kamila Szutenberg
Swamp (347) (7ED) from Seventh Edition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Rob Alexander
Swamp (443) - Retro Frame (Foil) (CMM) from Commander Masters, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Alayna Danner
Swamp (793) (CMM) from Commander Masters, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Kev Walker
Swamp (282) (MSH) from Marvel Super Heroes, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Sylvia Liu
Swamp (238) (M13) from Magic 2013, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Mike Bierek
Swamp (237) (ROE) from Rise of the Eldrazi, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Véronique Meignaud
Swamp (327) (C14) from Commander 2014, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Véronique Meignaud
Swamp (298) (3ED) from Revised Edition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Dan Frazier Card Text:T: Add B to your mana pool.
Swamp (370) (STX) from Strixhaven: School of Mages, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Titus Lunter Card Text:T: Add B.
Swamp (322) (PIP) from Fallout, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Nikola Matkovic
Swamp (342) (USG) from Urza's Saga, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: John Avon Card Text:T: Add B to your mana pool.
Swamp (311) (Surge Foil) (40K) from Warhammer 40,000 Commander, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Johan Grenier
Swamp (373) (Foil) (BLB) from Bloomburrow, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Piotr Dura
Swamp (293) - Retro Frame (INR) from Innistrad Remastered, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Kasia 'Kafis' Zielińska
Swamp (314) (TRK) from Star Trek, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Pablo Mendoza
Swamp (304) (ACR) from Assassin's Creed, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Wangjie Li
Swamp (341) (ONS) from Onslaught, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Dan Frazier
Swamp (340) (MMQ) from Mercadian Masques, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Rob Alexander
Swamp (341) (INV) from Invasion, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Rob Alexander
Swamp (377) (2XM) from Double Masters, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: John Avon
Swamp (341) (6ED) from Classic Sixth Edition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Douglas Shuler
Swamp (273) (Foil) (BRO) from The Brothers' War, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Robin Olausson
Swamp (239) (ROE) from Rise of the Eldrazi, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Véronique Meignaud
Swamp (314) (Surge Foil) (40K) from Warhammer 40,000 Commander, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Kamila Szutenberg
Swamp (370) (Foil) (STX) from Strixhaven: School of Mages, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Titus Lunter Card Text:T: Add B.
Swamp (340) (ODY) from Odyssey, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Arnie Swekel
Swamp (292) (MSH) from Marvel Super Heroes, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Oliver Wetter
Swamp (142) (PCA) from Planechase Anthology, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: John Avon