5 cards where the name includes “swamp”

Leechridden Swamp (Duel Decks: Nissa vs. Ob Nixilis #65)
Snow-Covered Swamp (Kaldheim #280)
Sol'kanar the Swamp King (Dominaria Remastered #200)
Swamp (Outlaws of Thunder Junction #281)
Swamp Mosquito (Time Spiral Timeshifted #49)

Though this query has ended, its relics still slumber in New Argive.