Your search for "Swamp 81" revealed the following:
Swamp (075) (GK1) from GRN Guild Kit, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Florian de Gesincourt
Swamp (078) (GK2) from RNA Guild Kit, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Dimitar Marinski
Swamp (850) (Surge Foil) (PIP) from Fallout, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Nikola Matkovic
Swamp (119) - Artist Series: Seb McKinnon (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Seb McKinnon Card Text: Artist Series: Seb McKinnon(T: Add B.)
Swamp (082) (BTD) from Beatdown Box Set, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: John Avon
Swamp (051) (GK2) from RNA Guild Kit, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Ravenna Tran
Swamp (261) (ORI) from Magic Origins, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Larry Elmore
Swamp - Tower Full Art (388) (Foil) (FRA) from Reality Fracture, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Daniel Romanovsky
Swamp - Tower Full Art (390) (Foil) (FRA) from Reality Fracture, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Daniel Romanovsky
Swamp - Tower Full Art (389) (Foil) (FRA) from Reality Fracture, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Daniel Romanovsky
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 (297) - Full Art (Foil) (NEO) from Kamigawa: Neon Dynasty, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Maiko Aoji Card Text:T: Add B.
Swamp (174) (PTK) from Portal Three Kingdoms, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Wang Chuxiong
Swamp (241) (M11) from Magic 2011, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Jim Pavelec
Swamp (407) - Retro Frame (Foil) (DMR) from Dominaria Remastered, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Romas Kukalis
Swamp (105) (DPA) from Duels of the Planeswalkers, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Alan Pollack
Swamp - Stained Glass Full Art (279) (Foil) (DMU) from Dominaria United, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Magali Villeneuve
Swamp (384) - The Astrology Lands (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Jeanne D'Angelo Card Text: Zodiac Lands(T: Add B.)
Swamp (105) - Happy Little Gathering (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Bob Ross Card Text: Happy Little Gathering(T: Add B.)
Swamp (298) - Full Art (Foil) (NEO) from Kamigawa: Neon Dynasty, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Shie Nanahara Card Text:T: Add B.
Swamp (341) (ONS) from Onslaught, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Dan Frazier
Swamp (281) (MSH) from Marvel Super Heroes, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Marc Aspinall
Swamp (281) (Foil) (MSH) from Marvel Super Heroes, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Marc Aspinall
Swamp (119) - 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 (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 (344) (C16) from Commander 2016, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Mark Poole
Swamp (261) (Foil) (ORI) from Magic Origins, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Larry Elmore
Swamp (025) (GK1) from GRN Guild Kit, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Noah Bradley
Swamp (181) (Foil) (FRF) from Fate Reforged, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Adam Paquette
Swamp (331) (C15) from Commander 2015, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: John Avon
Swamp (058) - Phyrexian (JMP) from Jumpstart, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Titus Lunter
Swamp (256) - The Full-Text Lands (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Card Text: Voracious ReaderThis card's name is Swamp. Basic is its supertype, land is its card type, and Swamp...
Swamp (js339) (WC99) (Jakub Šlemr) from World Championship Decks 1999, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: John Avon Card Text:T: Add B to your mana pool.Not a Tournament Legal card.
Swamp (369) - Celestial Borderless (Galaxy Foil) (EOE) from Edge of Eternities, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Adam Paquette
Swamp (239) (Foil) (M11) from Magic 2011, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Larry Elmore
Swamp (1161) (Surge Foil) (WHO) from Doctor Who, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Svetlin Velinov
Swamp (301) (C18) from Commander 2018, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Andreas Rocha
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 (307) (CMD) from Commander 2011, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Dan Frazier
Swamp (241) (Foil) (M11) from Magic 2011, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Jim Pavelec
Swamp (269) (M19) from Core Set 2019, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Mike Bierek
Swamp (718) - Scroll Showcase (Surge Foil) (LTR) from The Lord of the Rings: Tales of Middle-earth, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Deven Rue
Swamp (343) (C16) from Commander 2016, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Rebecca Guay
Swamp - Full Art (Foil) (UND) from Unsanctioned, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Adam Paquette
Swamp (311) (40K) from Warhammer 40,000 Commander, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Johan Grenier
Swamp (105) (ACR) from Assassin's Creed, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Wei Guan
Swamp (196) (Foil) (SPM) from Marvel's Spider-Man, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Jonas De Ro
Swamp (348) (C13) from Commander 2013, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Andreas Rocha
Swamp (256) - The Full-Text Lands (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Normal Card Text: Voracious ReaderThis card's name is Swamp. Basic is its supertype, land is its card type, and Swamp is...
Swamp (462) (Foil) (CLB) from Commander Legends: Battle for Baldur's Gate, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Sam White