Lumbering Falls (AFC) from Forgotten Realms Commander, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Titus Lunter
• Card Text:
  Lumbering Falls enters the battlefield tapped.
  T: Add G or U.
  2GU: Lumbering Falls becomes a 3/3 green and blue Elemental creature with hexproof until end of turn. It's still a land.