Your search for "swamp 56" revealed the following:
Swamp (206) (POR) from Portal, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Romas Kukalis
Swamp (237) (AVR) from Avacyn Restored, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Adam Paquette
Swamp (274) [Full Art] (ZNR) from Zendikar Rising, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Adam Paquette
Swamp (241) - The Unfathomable Crushing Brutality of Basic Lands (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Mark Riddick Card Text: Brutal Basic Lands
Swamp (065) - The Godzilla Lands - Japanese (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Lucas Graciano Card Text: The Godzilla LandsBThis land is printed Japanese-only for the Secret Lair Drop...
Swamp (276) (Foil) (ECL) from Lorwyn Eclipsed, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Raoul Vitale
Swamp (057) (JMP) from Jumpstart, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Titus Lunter
Swamp - Spellcraft Showcase (269) (SOS) from Secrets of Strixhaven, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Joshua Raphael
Swamp (277) (FDN) from Foundations, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Rebecca Guay
Swamp (342) (MMQ) from Mercadian Masques, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Terry Springer
Swamp - Core Full Art (289) (LCI) from The Lost Caverns of Ixalan, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Elektrodeko
Swamp (264) (RTR) from Return to Ravnica, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Richard Wright
Swamp (272) - Full Art (Foil) (VOW) from Innistrad: Crimson Vow, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Pig Hands
Swamp (266) (IKO) from Ikoria: Lair of Behemoths, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Alayna Danner
Swamp (300) (3ED) from Revised Edition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Dan Frazier Card Text:[B]
Swamp (557) - Jumpstart Lands (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Piotr Dura Card Text: Foil Jumpstart Lands(T: Add B.)
Swamp (291) (SHM) from Shadowmoor, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Warren Mahy
Swamp (341) (Foil) (ODY) from Odyssey, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Rob Alexander
Swamp (292) (LRW) from Lorwyn, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Wayne Reynolds
Swamp - Full Art (287) (Foil) (MOM) from March of the Machine, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Julian Kok Joon Wen
Swamp (272) (Foil) (M19) from Core Set 2019, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Mark Poole
Swamp (276) (LTR) from The Lord of the Rings: Tales of Middle-earth, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Deven Rue
Swamp (341) (ODY) from Odyssey, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Rob Alexander
Swamp (341) (MMQ) from Mercadian Masques, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Rob Alexander
Swamp (258) (ISD) from Innistrad, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jung Park
Swamp (257) (Foil) (KLD) from Kaladesh, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Adam Paquette
Swamp (BFZ) (#262) from Battle for Zendikar, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Adam Paquette
Swamp (277) (SOS) from Secrets of Strixhaven, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Leon Tukker
Swamp (347) (7ED) from Seventh Edition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Rob Alexander
Swamp (287) (Foil) (NEO) from Kamigawa: Neon Dynasty, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Piotr Dura Card Text:T: Add B.
Swamp (277) (LTR) from The Lord of the Rings: Tales of Middle-earth, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Deven Rue
Swamp (106) (ACR) from Assassin's Creed, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Wangjie Li
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 (341) (8ED) from Eighth Edition, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Dan Frazier
Swamp (460) (Foil) (CLB) from Commander Legends: Battle for Baldur's Gate, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Logan Feliciano
Swamp (cr340) (WC02) (Carlos Romão) from World Championship Decks 2002, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Arnie Swekel Card Text:BNot a Tournament Legal card.
Swamp (273) (AFR) from Adventures in the Forgotten Realms, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Adam Paquette
Swamp (342) (Foil) (INV) from Invasion, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Ron Spencer
Swamp (339) (MMQ) from Mercadian Masques, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jeff Easley
Swamp (268) (Foil) (DMU) from Dominaria United, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Seb McKinnon
Swamp (438) (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 (266) (LTR) from The Lord of the Rings: Tales of Middle-earth, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Shahab Alizadeh
Swamp (558) - Jumpstart Lands (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Lucas Graciano Card Text: Foil Jumpstart Lands(T: Add B.)
Swamp (273) - Full Art (ZNR) from Zendikar Rising, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Slawomir Maniak
Swamp (204) (POR) from Portal, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Romas Kukalis
Swamp (260) (RTR) from Return to Ravnica, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: John Avon
Swamp (343) (SCD) from Starter Commander Decks, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jung Park
Swamp (270) (M19) from Core Set 2019, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Cliff Childs
Swamp (282) (MKM) from Murders at Karlov Manor, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Carlos Palma Cruchaga
Swamp (295) (CM2) from Commander Anthology Volume II, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jung Park