Gate of the Unholy

The Gate of the Unholy enters tapped.
{t}: Add {b}{r}.
{b}{b}{r}{r}, {t}: Destroy target land. Create a 3/3 black and red demon creature token with flying.
{b}{b}{b}{r}{r}{r}, {t}: Destroy all other lands. Create a 5/5 black and red demon creature token equal to the number of lands destroyed this way.