Dragon's Roost

{4}{w}: Put a 4/4 white dragon creature token
with flying onto the battlefield.
{4}{u}: Put a 4/4 blue drake creature token
with flying onto the battlefield
{4}{b}: Put a 4/4 black dragon creature token
with flying onto the battlefield.
{4}{r}: Put a 4/4 red dragon creature token
with flying onto the battlefield.