Ordraw, the Storm Summoner

{r}: Put a 3/1 red Elemental creature token onto the battlefield.
{b}: Put a 1/1 black Elemental creature token with deathtouch onto the battlefield.
{7}{b}{r}, {t}: If you control no other non-token creatures, put a 7/7 black and red Elemental Giant creature token with reach and double strike onto the battlefield.