Shieldhide Dragon (DTK) from Dragons of Tarkir, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Chris Rallis
• Card Text:
  Flying, lifelink
  Megamorph 5WW (You may cast this card face down as a 2/2 creature for 3. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.)
  When Shieldhide Dragon is turned face up, put a +1/+1 counter on each other Dragon creature you control.