The Pyramid Sphinx

{1}{t}: Create a 1/1 white Sphinx artifact creature token with flying
{w}{w}{w}{t}: Create a 5/5 white Sphinx artifact creature token with flying and double strike
{5}{w}{w}{w}{w}{w}{t}: Create a 10/10 white Sphinx artifact creature token with flying, double strike, and indestructible
{10}{w}{w}{w}{w}{w}{w}{w}{w}{w}{w}{t}: Create a 20/20 white Sphinx artifact creature token with indestructible and hexproof that can not be blocked