Dromoka, Abzan's Might

Flying, vigilance, hexproof
When Dromoka, Abzan's Might is turned face up, put a +1/+1 counter on each Dragon you control.
Megamorph {5}{g}{w} (You may cast this card
face-down as a 2/2 creature for {3}. Turn it face-up at any time for its morph cost and put a +1/+1 counter on it.)