Awakener Druid (M10) from Magic 2010, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Jason Chan
• Card Text:
  When Awakener Druid enters the battlefield, target Forest becomes a 4/5 green Treefolk creature for as long as Awakener Druid is on the battlefield. It's still a land.