Stratus Dancer
Stratus Dancer {1}{U}
Creature - Djinn Monk | Power/Toughness: 2 / 1
Flying
Megamorph {1}{U} (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 Stratus Dancer is turned face up, counter target instant or sorcery spell.
Latest set: [DTK] Dragons of Tarkir (R)