Nova, Owels Ravager

Trample, Nova, Owels Ravager power is
equal to the number of lands you control.
{g}{g} {t}: Target creature you control gains trample and reach until end of turn.
{g}{g}{g} {t}: Untap X lands where X is the number of tapped creatures you control.
{g}{g}{g}{g} : Untap Nova, Owels Ravager.
Each player draws a card. Add {g}.