Your search for "Leechridden Swamp 286" revealed the following:
Leechridden Swamp (DSC) from Duskmourn: House of Horror Commander, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Drew Tucker Card Text:(T: Add B.)Leechridden Swamp enters tapped.B, T: Each opponent loses 1 life. Activate this ability only if you...