Great Nest Nasahvei

{t}:If you control a green creature add {g}{g}.
{t}:If you control a red creature add {r}.
{t}:If you control a black creature add {b}.
{t}:If you control a blue creature add {u}.
{t}:If you control a white creature add {w}.
If you control no creatures, sacrifice this card and create a green 3/3 Uberue Hatchling creature
token with trample.