Unstable Hulk

Oracle Text

Morph 3RR (You may cast this card face down as a 2/2 creature for 3. Turn it face up any time for its morph cost.)

When Unstable Hulk is turned face up, it gets +6/+6 and gains trample until end of turn. You skip your next turn.

Card Rulings

10/4/2004 The trigger occurs when you use the Morph ability to turn the card face up, or when an effect turns it face up. It will not trigger on being revealed or on leaving the battlefield.