Cyclopean Tomb (2ED) from Unlimited Edition, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Anson Maddocks
• Card Text:
  2: Turn any one non-swamp land into swamp during upkeep. Mark the changed lands with tokens. If Cyclopean Tomb is destroyed, remove one token of your choice each upkeep, returning that land to its original nature.