Gaea's Liege (2ED) from Unlimited Edition, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Dameon Willich
• Card Text:
  When defending, Gaea’s Liege has power and toughness equal to the number of forests you have in play; when it’s attacking, they are equal to the number of forests opponent has in play. Tap to turn any one land into a forest until Gaea’s Liege leaves play. Mark changed lands with counters, removing the counters when Gaea’s Liege leaves play.