Mountain of the Dragon Goddess

As an additional cost to summon Mountain of
the Dragon Goddess, sacrifice a Dragon.
{t}: Add two mana of any color.
{3}{w}{u}{b}{r}{g},{t}, Exile Mountain of the Dragon
Goddess: Summon a 4/4 Red Dragon, a 5/5
Blue Dragon, a 4/4 Black Dragon, a 4/4 White
Dragon, and a 4/4 Green Dragon all with flying.